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Four Nation-State Actors Used the Same Chrome Zero-Day Exploit Kit Within 12 Days

Proofpoint reports four nation-state actors, mostly China-nexus, adopted the BlueMoon Chrome and Windows zero-day exploit kit within 12 days, targeting US organizations.

Proofpoint tracked an exploit kit dubbed BlueMoon that chains CVE-2026-85046, a Chrome V8 type-confusion bug, with an unnamed V8 sandbox escape and CVE-2026-85880, a Windows kernel privilege escalation using ALPC and the Windows Notification Facility. The first observed use was by China-nexus TA412 (APT31, Violet Typhoon, JungleBamboo) on August 28, 2026 against US NGOs, mining companies, and commodity trading firms, followed by UNK_LateNight targeting US aerospace and defense companies on September 2. Both V8 bugs were patch-gap zero-days: the fix was committed to Chromium on August 7 but reached stable Chrome on September 3, enabling rapid weaponization from public patches. TA412's post-exploitation payload, GemStone, is a malicious browser extension posing as an AI-powered Google Gemini companion that captures keystrokes, cookies, screenshots, and browsing history via a Cloudflare Worker C2.

Security Affairs·updated 17:13 UTC · 2h ago·first Sep 10, 05:35 UTC · 6d agoExploit / PoC in the wild 19 sourcesCVE-2026-85046CVE-2026-858801

4 groups caught using the same Chrome and Windows exploit kit

Proofpoint says at least four groups, some China-linked, actively share the BlueMoon kit chaining two Chromium and one Windows kernel exploit.

Proofpoint researchers report that at least four hacking groups, some with ties to the Chinese government, are actively using a nearly identical exploit kit named BlueMoon. The kit chains two Chromium browser vulnerabilities and one Windows kernel flaw affecting Windows 10, Windows 11 initial release, and a later Windows version to install malware of the attacker's choice. All three vulnerabilities received patches within the past 24 hours. Proofpoint attributes the kit's rapid, widely shared deployment to a Chromium patch-gap window and AI agents accelerating exploit development against publicly accessible upstream patches.

Ars Technica · Security·updated Sep 10, 15:49 UTC · 6d ago·first Sep 9, 20:55 UTC · 6d agoExploit / PoC in the wild 3 sources3

CaptiveCrunch: Midnight Blizzard Weaponizes Hotel Wi-Fi Captive Portals to Steal Microsoft 365 Credentials

Zscaler details CaptiveCrunch: Midnight Blizzard's Storm-2945 compromises hotel Wi-Fi captive portals to redirect guests and harvest Microsoft 365 credentials via device code phishing.

Zscaler ThreatLabz analyzed the CaptiveCrunch credential theft campaign first reported by Microsoft on July 31. Microsoft attributes the activity to Storm-2945, a sub-cluster of Russia-linked Midnight Blizzard (APT29, Cozy Bear, NOBELIUM, BlueBravo). The actor manipulates DNS and HTTP traffic on captive portal networks at hotels and conference centers, redirecting victims to attacker-controlled infrastructure for Microsoft 365 credential harvesting, device code phishing, and malware delivery. Evidence indicates shared captive portal services were compromised rather than each venue being breached individually.

Zscaler ThreatLabz·Aug 11, 22:06 UTC · Aug 11, 2026Threat actor in the wild

CISA Warns of Chromium Type Confusion 0-Day Vulnerability Actively Exploited in Attacks

CISA added the actively exploited Chromium V8 type confusion zero-day CVE-2026-85046 to its KEV catalog, urging patching of Chrome, Edge, and Opera.

CISA added CVE-2026-85046, a V8 type confusion flaw (CWE-843) in Chromium-based browsers, to its Known Exploited Vulnerabilities catalog. A remote attacker can trigger arbitrary code execution inside the browser sandbox via a specially crafted HTML page. Google Chrome is directly affected, and Microsoft Edge, Opera, and other Chromium-based browsers may also be impacted depending on their V8 version. Google has released a Stable channel Chrome update, and CISA directs mitigations under Binding Operational Directive 26-04.

Cyber Security News·Sep 8, 16:25 UTC · 8d agoExploit / PoC in the wildCVE-2026-85046

Updated ToxicPanda Variant Targets 140+ Banking and Crypto Apps

Zimperium reports ToxicPanda 2.0, an updated Android banking trojan now targeting more than 140 banking and cryptocurrency apps.

Zimperium has published analysis of ToxicPanda 2.0, an updated Android banking trojan variant. The new variant expands its target list to over 140 banking and cryptocurrency applications. The report lifts the lid on the updated capabilities of the mobile malware family.

Infosecurity Magazine·Aug 20, 10:00 UTC · 27d agoMalware

CISA Adds One Known Exploited Vulnerability to Catalog

CISA added CVE-2026-85046, a Google Chromium V8 type confusion vulnerability with evidence of active exploitation, to its KEV Catalog.

On September 4, 2026, CISA added one vulnerability to the Known Exploited Vulnerabilities Catalog: CVE-2026-85046, a type confusion flaw in Google Chromium's V8 engine, added based on evidence of active exploitation. CISA notes type confusion is a frequent attack vector and poses significant risk to the federal enterprise. Under Binding Operational Directive 26-04, Federal Civilian Executive Branch agencies must prioritize remediation of KEV vulnerabilities on exposed assets and check for pre-patch compromise; all organizations are urged to prioritize the patch.

CISA Advisories·Sep 4, 12:00 UTC · 12d agoExploit / PoC in the wildCVE-2026-85046

CISA KEV: Google Chromium V8 Type Confusion Vulnerability — Google Chromium V8 (CVE-2026-85046)

CISA added actively exploited Chromium V8 type confusion CVE-2026-85046 to the KEV catalog, requiring federal mitigation by September 18.

CISA added CVE-2026-85046, a type confusion vulnerability in Google Chromium's V8 JavaScript engine, to the Known Exploited Vulnerabilities catalog. The flaw allows a remote attacker to execute arbitrary code inside the browser sandbox via a crafted HTML page and affects Chromium-based browsers including Google Chrome, Microsoft Edge, and Opera. Federal agencies must apply vendor mitigations by 2026-09-18 under BOD 26-04; CISA notes known ransomware campaign use is currently unknown.

CISA Known Exploited Vulnerabilities·Sep 4, 00:00 UTC · 12d agoExploit / PoC in the wildCVE-2026-85046

ToxicPanda 2.0 Gets a Major Upgrade, Expanding Attacks Across 16 Countries

Zimperium documents ToxicPanda 2.0, an Android banking trojan now targeting 349 financial institutions in 16 countries via ADB privilege escalation and overlay credential theft.

Zimperium's zLabs documented ToxicPanda 2.0, an Android banking trojan expanding from 16 targeted apps to 349 financial institutions across 16 countries, with 167 remote commands. It poses as a dropper, abuses VPN permissions to block Google Play Protect while installing a hidden payload, then uses the Accessibility Service for screen monitoring and overlay-based credential theft. It automates enabling Android Wireless Debugging and completes the pairing handshake to gain ADB shell access for privilege escalation, and overlays fake lock screens to steal device PINs. Previously unfinished commands are now operational and samples are served from AWS-hosted storage buckets.

Security Affairs·Aug 22, 16:50 UTC · 25d agoMalware in the wild

Mercator ↔ Equal Earth

Simon Willison used GPT-6 Astra (medium) in ChatGPT Work to build an animated D3 transition between Mercator and Equal Earth map projections.

Willison built an animated transition between the Mercator and Equal Earth map projections using D3. The tool was generated by GPT-6 Astra (medium) in ChatGPT Work. Equal Earth is a projection recently voted on at the UN. The post is a vibe-coding demonstration rather than a security or major model event.

Simon Willison·Sep 7, 16:24 UTC · 9d agoAI tools & infra1

U.S. CISA adds Google Chromium V8 flaw to its Known Exploited Vulnerabilities catalog

CISA added actively exploited Chrome V8 type-confusion flaw CVE-2026-85046 (CVSS 8.8) to its KEV catalog; Google patched it in Chrome 152.

CISA added CVE-2026-85046 (CVSS 8.8), a V8 type confusion flaw, to its Known Exploited Vulnerabilities catalog, requiring US federal agencies to patch by September 18, 2026. Google fixed it in Chrome Stable 152.0.7977.82/.83 for Windows and Mac and 152.0.7977.82 for Linux, alongside 11 other vulnerabilities. The bug lets a remote attacker execute arbitrary code inside the browser sandbox via a crafted HTML page and is the sixth actively exploited Chrome zero-day of 2026. Researcher Salvatore Gulizia (Serotav) reported it on August 4, 2026.

Security Affairs·Sep 4, 22:50 UTC · 11d agoExploit / PoC in the wildCVE-2026-85046CVE-2026-2441CVE-2026-3909+3 CVEs1

CVE-2026-87464: RCE outside sandbox in Chromium prior to 153.0.8010.36

CVE-2026-87464 is a critical use-after-free in Chrome's WebGL allowing sandbox-escaping RCE via crafted HTML pages, fixed in 153.0.8010.36.

Google Chrome prior to 153.0.8010.36 contains a use-after-free in WebGL that allows a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. Google rates it as Chromium security severity Critical, though tracker details are restricted. Debian indicates all current Chromium packages are affected, and the flaw likely impacts Chromium-derived browsers. No active exploitation is mentioned in the disclosure.

oss-security·Sep 10, 14:24 UTC · 6d agoVulnerabilityCVE-2026-87464

[Control Systems] Siemens security advisory (AV26-864)

Siemens fixed a vulnerability in Element maps-ng V47-V49 (SSA-682041); Canada's Cyber Centre urges administrators to apply the updated releases.

Siemens advisory SSA-682041 addresses a vulnerability affecting Element maps-ng V47 prior to V47.12.3, V48 prior to V48.11.3, and V49 prior to V49.16.1. Canada's Cyber Centre republished the notice (AV26-864) encouraging users and administrators to review the vendor links and apply the necessary updates. No CVSS score or exploitation details were provided in the bulletin.

Canadian Centre for Cyber Security·Aug 31, 15:59 UTC · 16d agoAdvisory

Mitsubishi Electric Multiple FA Products (Update D)

CISA warns Mitsubishi Electric CC-Link IE TSN remote I/O modules are vulnerable to denial-of-service via crafted UDP packets (CVE-2025-3511).

CISA published Update D of advisory ICSA-25-128-03 covering Mitsubishi Electric factory automation products. Affected products include CC-Link IE TSN Remote I/O modules NZ2GN2S1-32D, NZ2GN2S1-32T, NZ2GN2S1-32TE, and NZ2GN2S1-32DT at firmware version 09 or earlier (CVE-2025-3511). A remote attacker can send a specially crafted UDP packet to cause denial-of-service conditions, timeout errors, or communication delays on the affected products.

CISA Advisories·Aug 27, 12:00 UTC · 20d agoAdvisoryCVE-2025-3511

Rockwell Automation RSLinx Classic

CISA flags four flaws (CVE-2026-9621/9622/9624/9625) in Rockwell RSLinx Classic 4.50 and below that can cause denial-of-service conditions; CVSS 8.6.

CISA published an ICS advisory covering four vulnerabilities in Rockwell Automation RSLinx Classic versions 4.50 and below. The integer overflow, underflow, and classic buffer overflow flaws (CVE-2026-9621, CVE-2026-9622, CVE-2026-9624, CVE-2026-9625) could let attackers cause denial-of-service conditions. The product is deployed worldwide, primarily in critical manufacturing.

CISA Advisories·Sep 1, 12:00 UTC · 15d agoAdvisoryCVE-2026-9621CVE-2026-9622CVE-2026-9624+1 CVEs

PAPERMILL Malware Campaign Abuses Signed Notepad++ to Deliver VenomRAT to Windows Users

JUMPSEC tracks PAPERMILL, a China-nexus phishing campaign using a signed Notepad++ binary, libcurl.dll sideloading, and Donut loaders to deploy VenomRAT against Indian tax-audit targets.

PAPERMILL delivers ISO disk images via tax-audit phishing emails that passed SPF, DKIM, and DMARC, containing a renamed Authenticode-signed Notepad++ executable and a malicious libcurl.dll that proxies curl functions while executing loader logic in DllMain. The chain uses Mark-of-the-Web bypasses, anti-sandbox sleeps, UAC elevation prompts, Registry persistence, and a Donut shellcode loader to reflectively load .NET VenomRAT v6.0.3 with HVNC and credential-stealing capability, with C2 at 154.36.188.201:4449. JUMPSEC assesses the campaign as China-nexus, financially motivated, and Silver Fox-adjacent rather than definitively Silver Fox-operated.

GBHackers·updated 12:23 UTC · 7h ago·first 09:36 UTC · 10h agoMalware in the wild 2 sources

Hackers abused Claude to extract secrets from 1.8M Android apps

Anthropic reports ShinyHunters, Midnight Blizzard, and GTG-10007 misused Claude to automate credential theft, malware operations, and espionage against dozens of victims.

Anthropic's threat report details how ShinyHunters member 'frkoo' ran a credential-harvesting pipeline on ten AWS EC2 workers that mass-downloaded and decompiled 1.8 million Android APKs, scanning for hardcoded secrets with TruffleHog. In one AI-assisted operation, an actor extracted 2,100+ Azure AD authentication tokens across more than 40 Microsoft tenants in roughly 34 hours, and ShinyHunters affiliates also stole AI API keys and breached a SaaS provider affecting about 200 downstream customers. Russian espionage group Midnight Blizzard used Claude Code skills to automate malware development, phishing, C2, and exfiltration against 20+ government and defense entities, rebuilding malware automatically when detected. Chinese-linked GTG-10007 ran autonomous vulnerability research that uncovered zero-days in a major endpoint security product and hit roughly 50 organizations with confirmed compromises; Anthropic disrupted the abuse and banned the accounts.

BleepingComputer·updated Sep 12, 10:30 UTC · 4d ago·first Sep 11, 20:19 UTC · 4d agoThreat actor in the wild 15 sources1

Python Now Has a Post-Quantum Encryption Library

Schneier on Security·Aug 10, 11:02 UTC · Aug 10, 2026Industry1

ClearFake WebDAV infection chain delivers Amatera stealer, ZigCryptoStealer, and NetSupport Manager

Cisco Talos details ClearFake WebDAV chains delivering Amatera stealer to a Ukrainian government organization, with cryptocurrency and credential theft payloads.

Cisco Talos investigated DLL executions named 'verification.google' via WebDAV UNC paths at a Ukrainian government organization, tracking the actor as UAT-10820 and assessing with moderate confidence the activity is Russian and opportunistic rather than targeted. The infection chain uses ClearFake JavaScript injected via a Cloudflare Worker, EtherHiding storage on BNB Smart Chain contracts, and a ClickFix fake Google CAPTCHA prompt to deliver Amatera stealer. Secondary payloads differ by C2: one loader deploys ZigCryptoStealer with a Go reverse TCP proxy and a vulnerable driver that kills EDR, while the other installs an unauthorized NetSupport Manager with a Russia-based C2. Similar Amatera chains were separately documented by Malwarebytes and Blackpoint Cyber, but with no shared infrastructure.

Cisco Talos·Sep 8, 10:01 UTC · 8d agoMalware in the wild1

Hackers Chain Chrome and Windows Zero-Days in New BlueMoon Exploit Kit Attacks

Multiple espionage actors, mostly China-nexus, are chaining Chrome V8 and Windows kernel zero-days (CVE-2026-85046, CVE-2026-85880) via the BlueMoon exploit kit against government and defense targets.

Proofpoint identified a new exploit kit dubbed BlueMoon chaining a Chromium V8 type-confusion RCE (CVE-2026-85046), a V8 sandbox escape, and a Windows kernel LPE (CVE-2026-85880). At least four distinct threat clusters, most with suspected China nexus, adopted the kit within days starting with TA412 (Violet Typhoon/APT31) on August 28, 2026. Both Chrome-side flaws were patch-gap zero-days with roughly a four-week exploitation window; the Windows LPE only works on Windows 10 and Server 2019/2022. TA412 used spearphishing posing as university interns to deliver the GemStone browser backdoor disguised as a Google Gemini extension; other clusters delivered ShadowPad via DLL sideloading and a Rust loader against targets in aerospace, government, and finance.

Cyber Security News·Sep 9, 16:59 UTC · 7d agoExploit / PoC in the wildCVE-2026-85046CVE-2026-858801

Four Spy Groups Used the Same Chrome and Windows Exploit Kit Within a Week

Proofpoint links four espionage clusters, including China's APT31, using shared exploit kit BlueMoon chaining Chrome V8 and Windows ALPC zero-days.

Proofpoint reports a previously undocumented exploit kit, BlueMoon, chains Chrome V8 type confusion CVE-2026-85046 with an unassigned V8 sandbox escape and Windows ALPC heap overflow CVE-2026-85880 to achieve code execution and local privilege escalation. APT31 first used it on August 28, 2026 against US NGOs, mining, and commodity trading firms, deploying the GemStone browser backdoor disguised as a Google Gemini extension via the GhostChrome-X integrity bypass. UNK_LateNight, UNK_DoubleCheck, and UNK_QuietRacket followed on September 2-3, targeting US aerospace, Vietnamese manufacturing, and Indonesian/Singaporean sectors with ShadowPad and sideloaded Rust and .NET payloads. Both V8 flaws were patch-gap zero-days, and verbose code suggests possible AI-assisted development.

The Hacker News·Sep 9, 16:34 UTC · 7d agoThreat actor in the wild 2 sourcesCVE-2026-85046CVE-2026-858801

Rockwell Automation 1756-ENBT Module

Rockwell's 1756-ENBT ControlLogix EtherNet/IP bridge (all versions) is vulnerable to DoS via crafted CIP packets, crashing the module until manual restart.

CISA republished Rockwell Automation's advisory for CVE-2025-10478, a CWE-754 flaw affecting all versions of the 1756-ENBT ControlLogix EtherNet/IP bridge, scored CVSS 7.5. A crafted CIP packet can crash the module, and the device requires a restart to recover. Affected critical infrastructure sectors include critical manufacturing, food and agriculture, transportation systems, and water. No public exploitation has been reported; CISA recommends minimizing network exposure.

CISA Advisories·Sep 3, 12:00 UTC · 13d agoAdvisory 3 sourcesCVE-2025-10478

U.S. CISA adds Apple macOS, Microsoft SharePoint, Broadcom VMware vCenter, and Microsoft IKE flaws to its Known Exploited Vulnerabilities catalog

CISA adds actively exploited flaws in Microsoft IKE, SharePoint, VMware vCenter, and macOS Screen Sharing to KEV catalog, due August 21.

CISA added four vulnerabilities to its Known Exploited Vulnerabilities catalog: CVE-2026-33824 (Windows IKE remote code execution, CVSS 9.8), CVE-2026-55040 (SharePoint JWT authentication bypass, CVSS 9.1), CVE-2026-59310 (VMware vCenter Syslog path traversal, CVSS 9.8), and CVE-2026-65400 (macOS Screen Sharing improper authentication). The SharePoint flaw combines four weaknesses including alg:none JWT forging to impersonate any user, with Defused researchers observing attackers using Rapid7's PoC against honeypots. The Dutch NCSC confirmed active exploitation of the macOS Screen Sharing flaw on August 15, 2026. Federal agencies must patch by August 21, 2026.

Security Affairs·Aug 19, 07:19 UTC · 28d agoExploit / PoC in the wildCVE-2026-33824CVE-2026-55040CVE-2026-59310+1 CVEs

AmnesiaStealer Hijacks Chromium Sessions to Give Attackers Live Browser Control on macOS

Jamf details AmnesiaStealer, a new Rust-based macOS infostealer that hijacks Chromium sessions for live attacker-controlled browser access and steals Keychain data.

Jamf Threat Labs disclosed a three-stage macOS infostealer called AmnesiaStealer distributed via a fake GitHub download page using a ClickFix-style lure that tricks users into pasting a Base64 command into Terminal. The Rust payload harvests the Keychain, Apple Notes, Telegram sessions, Safari cookies, and 16 Chromium-family browsers, and captures the system password via a native prompt validated with dscl. A remotely fetched stream_module gives operators hidden, interactive browser control via the Chrome DevTools Protocol, streaming a live session at roughly 3fps. It persists via a root LaunchDaemon impersonating Apple's crash reporter and leverages the TCC bypass CVE-2020-9771 against macOS Catalina.

The Hacker News·Aug 15, 00:00 UTC · Aug 15, 2026Malware in the wildCVE-2020-9771

Claude Fable 5.1 Solves the Cyphral Distich, a 370-year-old cipher

Claude Fable 5.1 solved Sir Thomas Urquhart's 370-year-old Cyphral Distich cipher, recovering a hidden royalist prayer for Charles II.

Vals AI reports that Claude Fable 5.1 solved the Cyphral Distich, a 64-number cryptogram from Sir Thomas Urquhart's Logopandecteision unsolved since 1653, in 44 minutes using 176k tokens with no human hints. The key insight was that the cipher's key was the book itself: each number indexes a word in the corresponding Proquiritation, taking the first letter, yielding 'O GOD UPHOLD KING CHARLS THE SECOND AND MAKE HIM THE SUPREME RULER OF THIS LAND'. The model also deciphered the larger Cyphral Octastich (285 numbers) from The Jewel (1652) using page-based word indexing, recovering all but nine letters of a royalist prayer. The puzzle had been listed among Klaus Schmeh's Top 50 unsolved encrypted messages.

Hacker News · AI·Sep 13, 21:06 UTC · 2d agoAI researchHN 63↑ · 6 comments1· 1 read