Elastic details a layered detection framework for Linux local privilege escalation, covering 2026's copy-on-write bug wave and LLM-assisted discovery.
Elastic Security Labs describes how most Linux local privilege escalations share a common host flow — an unprivileged process launched from a writable path becoming root — and proposes layered detections combining general outcome-based rules with per-technique rules in Elastic Defend and Auditd. It tracks 13 recent LPE disclosures, seven of which share a copy-on-write/zero-copy bug class, including Copy Fail, DirtyFrag, Fragnesia, DirtyDecrypt, DirtyClone, pedit COW, and RefluXFS. Qualys attributes RefluXFS to an LLM-assisted research effort with Anthropic using Claude Mythos Preview, and another bug is credited to an LLM-assisted workflow. Detection and endpoint rules are published in Elastic's detection-rules and protections-artifacts repositories.
GBHackers ranks NinjaOne, ManageEngine, and Automox atop twelve patch management tools for 2026, emphasizing third-party application coverage.
GBHackers scored twelve patch management platforms on coverage, automation, visibility, deployment, and value, with NinjaOne ranked highest at 4.55. Action1 is highlighted for its genuinely usable free tier, ManageEngine for third-party catalog breadth, and Automox for cloud-native cross-OS automation. The piece notes that unpatched known vulnerabilities remain a top initial-access vector, citing CISA's Known Exploited Vulnerabilities catalog.
Google patched actively exploited Chrome V8 out-of-bounds write CVE-2026-87491; CISA added it to KEV with a September 23 patch deadline.
Google fixed 230 Chrome vulnerabilities in its stable channel update, including CVE-2026-87491, an out-of-bounds write in the V8 JavaScript engine being exploited in the wild. The flaw, reported by Jihyeon Jeong of Compsec Lab, Seoul National University, is the seventh Chrome zero-day patched by Google in 2026. It affects Chrome versions before 153.0.8010.36, and CISA added it to the Known Exploited Vulnerabilities Catalog urging patching before September 23, 2026. Users should upgrade to Chrome 153.0.8010.36 (Linux) or 153.0.8010.36/.37 (Windows/Mac); Qualys customers can detect vulnerable assets with QID 388666.
CISA confirms exploitation of two Windows zero-days among 973 Microsoft patches; 22,000 Exchange servers remain unpatched.
Microsoft's September Patch Tuesday sets a record with 973 vulnerabilities, and CISA confirms CVE-2026-81963 and CVE-2026-85880 are being exploited, giving federal agencies until September 22 to patch. Nightwing estimates over 22,000 corporate Exchange servers are unpatched against weaponized exploit code. Analysts describe CVE-2026-81963 as an early link in ransomware chains where phishing leads to privilege escalation, and note year-to-date Microsoft disclosures exceed 2,600 bugs.
CISA added two actively exploited SonicWall SMA1000 flaws to KEV: pre-auth SSRF CVE-2026-83548 (CVSS 10) and post-auth RCE CVE-2026-83549; patch by September 5.
CISA added CVE-2026-83548 and CVE-2026-83549 to the Known Exploited Vulnerabilities Catalog with a September 5, 2026 patch deadline. CVE-2026-83548 is a critical (CVSS 10.0) pre-authentication SSRF in the SMA1000 Appliance Work Place interface; CVE-2026-83549 is a high (CVSS 7.8) post-authentication OS command injection leading to RCE in the Appliance Management Console. SMA1000 models 6210, 7210, and 8200v running 12.4.3-03453 or 12.5.0-02835 platform-hotfix and older are affected; fixes ship in 12.4.3-03526 and 12.5.0-02952. Qualys customers can detect vulnerable assets via QID 388624.
CISA added the actively exploited JFrog Artifactory flaw CVE-2026-82329 (CVSS 9.8) to its KEV catalog; unauthenticated attackers gain admin access.
CISA added CVE-2026-82329, a critical improper authentication flaw in JFrog Artifactory, to its Known Exploited Vulnerabilities Catalog with a September 5, 2026 patch deadline. The CVSS v3.1 9.8 flaw allows unauthenticated attackers with network access to obtain administrative privileges under the default configuration. WatchTowr honeypot data shows attackers minting administrator tokens, enumerating users, groups, and federated access topologies, and in some cases creating backdoor users for persistence. Users must upgrade to Artifactory 7.161.20 or the applicable fixed release; Qualys detects vulnerable assets via QID 735249.
Critical CVSS 9.8 RCE CVE-2026-0768 in Langflow is under active exploitation, with attackers probing for credentials and secrets.
CVE-2026-0768, a critical (CVSS 9.8) remote code execution flaw in Langflow's code validator, lets attackers execute Python code with root privileges via the validate endpoint's code parameter. VulnCheck honeypots in the UK detected Russian-origin exploitation performing reconnaissance and credential harvesting, querying environment variables like LANGFLOW_SUPERUSER and AWS keys and reading Langflow's secret key. Versions before 1.4.2 are affected; no vendor advisory or public PoC was available at reporting time.
Veeam patched critical CVE-2026-65641 (CVSS 9.3) in Veeam ONE, exploitable by unauthenticated network attackers to coerce SMB authentication from the service account.
Veeam released patches for its Veeam ONE monitoring, reporting, and capacity planning software addressing CVE-2026-65641, rated critical with a CVSS score of 9.3. Successful exploitation allows an unauthenticated network attacker to coerce SMB authentication from the Veeam ONE service account, creating relay-style attack opportunities. Qualys ThreatPROTECT relayed the vendor advisory; administrators should apply the patches promptly. No in-the-wild exploitation is noted in the advisory.
CISA added actively exploited Zimbra OS command injection flaw CVE-2026-73570 to its KEV catalog, urging users to patch by August 24, 2026.
CISA warned that Zimbra vulnerability CVE-2026-73570 is being actively exploited in the wild and added it to its Known Exploited Vulnerabilities Catalog. The OS command injection flaw resides in the SNMP monitoring component and is exploitable when SNMP notifications are enabled. Users, including US federal agencies subject to BOD deadlines, were urged to apply fixes before the August 24, 2026 deadline. Qualys ThreatPROTECT published tracking coverage of the KEV addition.
Improper Authentication in JFrog Artifactory Allows Unauthenticated Admin Access
JFrog Artifactory contains an improper authentication flaw (CWE-287) that, under the product's default configuration, can let an unauthenticated attacker with network access obtain administrative privileges. The weakness is reachable over the network with no privileges or user interaction required, which is why it carries a critical 9.8 CVSS 3.1 score; an attacker who succeeds effectively gains full administrator control of the artifact repository, and public reporting describes attackers using the flaw to mint admin tokens days after disclosure. Any organization running JFrog Artifactory is in scope — CISA's entry lists the product without version detail, so deployments should verify their versions against JFrog's advisory (AV26-867, Update 1) — with internet-exposed instances at greatest risk. Exploitation is confirmed in the wild: CISA added the CVE to its Known Exploited Vulnerabilities Catalog on 2026-09-02, a public proof-of-concept is available, and news headlines report active exploitation alongside related Artifactory flaws CVE-2026-42016 and CVE-2026-42018.
Unauthenticated RCE in Langflow AI Workflow Builder
CVE-2026-33017 is an unauthenticated remote code execution flaw in Langflow, an open-source tool for building and deploying AI-powered agents and workflows. The POST /api/v1/build_public_tmp/{flow_id}/flow endpoint, which by design requires no authentication for building public flows, accepts an optional data parameter; when present, attacker-controlled flow data — including arbitrary Python code embedded in node definitions — is used instead of the flow stored in the database and passed to exec() with no sandboxing. An attacker who can reach this endpoint on an affected instance can therefore execute arbitrary Python code without any credentials, typically yielding full compromise of the underlying server. All Langflow versions prior to 1.9.0 are affected; the issue was fixed in 1.9.0 and is distinct from CVE-2025-3248, which only added authentication to the /api/v1/validate/code endpoint. The flaw was added to CISA's KEV catalog on 2026-03-25 (confirming exploitation in the wild), carries a 96.2% EPSS probability of exploitation within 30 days, and related reporting describes Langflow RCE attacks, including ransomware activity targeting AI model files.
· Langflow all versions prior to 1.9.0 (fixed in 1.9.0) KEV PoC ×4moderate
Out-of-Bounds Read/Write in Google Chrome V8 Enables In-Sandbox Code Execution
CVE-2026-11645 is an out-of-bounds read and write (CWE-125/CWE-787) in V8, the JavaScript engine used by Google Chrome and Chromium. A remote attacker triggers the flaw by luring a user to a crafted HTML page, where malicious script causes V8 to read and write outside allocated memory buffers. Successful exploitation allows the attacker to execute arbitrary code inside the browser's security sandbox, providing limited privileges within that process rather than full system compromise. All Google Chrome versions prior to 149.0.7827.103 are affected, along with the Chromium V8 component identified by CISA. The flaw is being exploited in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2026-06-09, and related headlines describe an actively exploited Chrome V8 zero-day, though no public proof-of-concept is known and ransomware use is unconfirmed.
· Google Chrome prior to 149.0.7827.103 · Google Chromium V8 (as shipped in Chrome) prior to the 149.0.7827.103 Chrome release KEVmass
Actively Exploited Out-of-Bounds Write in Google Chrome V8
CVE-2026-87491 is an out-of-bounds write (CWE-787) in the V8 JavaScript engine in Google Chrome, fixed in Chrome 153.0.8010.36, which Google shipped alongside roughly 230 other security fixes. An attacker can trigger the flaw remotely by luring a user (user interaction required) into opening a crafted HTML page that corrupts memory in V8. Successful exploitation allows the attacker to execute arbitrary code inside the Chrome browser sandbox, which constrains but does not eliminate the impact. All Google Chrome users running versions prior to 153.0.8010.36 are affected; because the flaw resides in V8, CISA tracks it as 'Google Chromium V8', and other Chromium-based browsers may inherit the fix in their own updates. The flaw is being actively exploited in the wild — it is the seventh actively exploited Chrome zero-day of 2026 and was added to CISA's KEV catalog on 2026-09-09 — though no public proof-of-concept is known and ransomware use is unknown.
· Google Chrome (V8 JavaScript engine; tracked by CISA as 'Google Chromium V8') prior to 153.0.8010.36 KEVmass
Out-of-Bounds Write in Google Chrome's Skia Rendering Engine
CVE-2026-3909 is an out-of-bounds write (CWE-787) in the Skia graphics rendering library used by Google Chrome, which Google patched in Chrome 146.0.7680.75. A remote attacker can trigger the flaw by luring a user to visit a crafted HTML page, causing out-of-bounds memory access in the browser process; the High CVSS 8.8 score with high confidentiality, integrity, and availability impact indicates memory corruption with potentially serious consequences. All Google Chrome installations running versions prior to 146.0.7680.75 are affected, and because the vulnerability resides in the Skia engine, the vulnerable code is present in every Chrome install. CISA added the flaw to its Known Exploited Vulnerabilities catalog on 2026-03-13, indicating exploitation in the wild, though no public proof-of-concept is known and ransomware use is unknown. EPSS currently assigns a 1.6% probability of exploitation within the next 30 days (75th percentile).
· Google Chrome (Skia rendering engine) all versions prior to 146.0.7680.75 · Google Skia (as shipped in Google Chrome, per CISA) prior to Chrome 146.0.7680.75 KEVmass
Use-After-Free in Google Chromium CSS Rendering Exposes Chrome, Edge, Opera Users
CVE-2026-2441 is a use-after-free (CWE-416) in Google Chromium's CSS handling that a remote attacker can trigger by getting a user's browser to process a crafted HTML page, potentially corrupting the heap. Successful exploitation yields a memory-corruption primitive in the browser; CVSS scoring is not yet available, but Chromium memory-safety flaws of this class can range from crashes to potential code execution depending on how the corruption is leveraged. Anyone running Chromium or a Chromium-based browser — Google Chrome, Microsoft Edge, Opera, and numerous embedded/branded browsers — is potentially affected, making the exposed population effectively all modern browser users. CISA added the flaw to the Known Exploited Vulnerabilities catalog on 2026-02-17, confirming it is being exploited in the wild; EPSS assigns a 22% probability of exploitation within 30 days (98th percentile), no public PoC is known, and any ransomware association is unknown. This lands amid an accelerating series of actively exploited Chrome zero-days in 2026 described in recent reporting, making rapid patching urgent.
· Google Chromium · Google Chrome (Chromium-based) KEV PoC mass
Out-of-Bounds Memory Flaw in Google Chrome V8 Allows Sandboxed Code Execution
CVE-2026-3910 is an out-of-bounds memory flaw — CISA classifies it as improper restriction of operations within the bounds of a memory buffer — caused by an inappropriate implementation in the V8 JavaScript and WebAssembly engine used in Google Chrome. A remote attacker triggers it by luring a user to a crafted HTML page, so exploitation requires user interaction but no privileges or special conditions. Successful exploitation allows the attacker to execute arbitrary code inside the Chrome sandbox, which confines the compromise to the renderer process rather than the full system, but still exposes data and credentials handled within the browser session. Anyone running Google Chrome prior to 146.0.7680.75 — or a Chromium-based browser that embeds the vulnerable V8 code — is affected. The flaw is being actively exploited in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2026-03-13, and it comes amid a string of actively exploited Chrome V8 zero-days that Google has fixed during 2026.
· google chrome prior to 146.0.7680.75 (fixed in 146.0.7680.75) KEVmass
Authenticated OS Command Injection RCE in SonicWall SMA1000 Appliance Console
CVE-2026-83549 is a post-authentication OS command injection flaw (CWE-78) in the Appliance Management Console (AMC) of SonicWall SMA1000 appliances. An attacker who authenticates to the AMC with administrator privileges can, under specific conditions, inject arbitrary operating system commands and achieve remote code execution on the appliance. Only organizations running SMA1000-series appliances, including the SMA 6210, SMA 7210, and SMA 8200v models cited in the data, are affected. CISA added the flaw to the KEV catalog on 2026-09-02, and news reports describe active exploitation, possibly chained with companion zero-day CVE-2026-83548, with reverse shells and cryptocurrency miners observed; no public proof-of-concept is known. EPSS assigns an 8.5% probability of exploitation within 30 days (95th percentile).
· SonicWall SMA1000 series appliances - Appliance Management Console (AMC) · SonicWall SMA 6210 (SMA1000 series firmware) KEVmoderate
Heap-Based Buffer Overflow in Windows ALPC Enables Local Privilege Escalation
CVE-2026-85880 is a heap-based buffer overflow in Windows Advanced Local Procedure Call (ALPC), the Windows mechanism for local inter-process communication. An authorized local attacker can trigger the overflow by submitting crafted input over ALPC, corrupting heap memory in the component that handles the request. Successful exploitation allows the attacker to execute code with elevated privileges, typically gaining SYSTEM-level control of the local host, which is especially valuable as a post-exploitation or sandbox-escape step. Affected products include Windows 10 (1607, 1809, 21H2, 22H2) and Windows Server 2012, 2016, 2019, and 2022, meaning most on-premises Windows estates are in scope. The flaw was fixed in Microsoft's record 974-CVE September 2026 Patch Tuesday and was added to CISA's KEV on 2026-09-08, confirming exploitation in the wild; press reports describe Windows zero-days being chained with a Chrome zero-day in 'BlueMoon' kit attacks, though the data does not explicitly confirm this CVE is the Windows flaw in that chain.
· Microsoft Windows 10 1607, 1809, 21H2, 22H2 · Microsoft Windows Server 2012, 2016, 2019, 2022 KEVmass
Authenticated Path Traversal Arbitrary File Write in Langflow Files API
CVE-2026-5027 is a path traversal flaw (CWE-22) in the 'POST /api/v2/files' endpoint of Langflow, the open-source platform for building AI/LLM agent workflows. The endpoint fails to sanitize the 'filename' field supplied in multipart form data, so an attacker who submits a name containing '../' sequences can direct the resulting file write to arbitrary locations on the server's filesystem. The CVSS vector (network-accessible, low complexity, low-privilege account required, no user interaction) indicates an authenticated user can abuse this to overwrite or create files at attacker-chosen paths, which can compromise confidentiality, integrity, and availability — for example by overwriting configuration, credentials, or executable content that leads to code execution depending on deployment. Any organization running a self-hosted Langflow instance that exposes the files API, even to low-privileged accounts, is affected. No public proof-of-concept or confirmed in-the-wild exploitation is known for this specific CVE, and it is not yet on CISA's KEV list, but its elevated EPSS (36.1%, 98th percentile) and active exploitation of other Langflow vulnerabilities (e.g., CVE-2026-0768) suggest near-term exploitation risk.
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