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Week in review: Compromised Zimbra servers, previously patched Citrix NetScaler flaw exploited

Help Net Security's weekly digest highlights 274 compromised Zimbra servers, Gitea and Citrix NetScaler KEV additions, a PaperCut zero-day, and a suspected Iran-linked power plant attack.

The roundup reports at least 274 internet-facing Zimbra instances compromised via CVE-2026-73570, critical Gitea CVE-2026-60004 added to CISA's KEV catalog after exploitation began, and previously patched Citrix NetScaler flaw CVE-2026-8452 exploited in the wild. It also covers PaperCut NG/MF zero-day attacks, a suspected Iran-linked shutdown of a UK power plant, an FBI seizure of domains tied to a China-linked group that hit NASA, DOJ and the Senate, a cyberattack disrupting Boston Scientific, and the Manchester Airports Group breach. Additional items include Chameleon SEO poisoning phishing, Android car head unit proxy botnet malware, ReliaQuest social engineering by ShinyHunters, fake OpenAI Codex macOS malware, and AI-related workforce and supply chain interviews.

Help Net Security · 17d agoIndustry in the wildCVE-2026-73570CVE-2026-60004CVE-2026-8452

Scientists Discover Vast Underground 'Anomaly' on Mars

Scientists used tidal tomography via NASA orbiters to detect a thermal anomaly in Mars' southern mantle, 400-750°F hotter than the north.

A study published in Nature used 16 years of tracking data from three NASA orbiters to apply tidal tomography to Mars for the first time, revealing the southern hemisphere's mantle is 400-750°F hotter than the north. The finding bears on the Martian dichotomy and the planet's past habitability. This is off-topic for a cyber/AI dashboard.

404 Media · 20d agoOther

US seizes domains of Chinese botnet used to target NASA, Justice Department, and the Senate

US Justice Department seized domains of a Chinese botnet used to hack NASA, the Justice Department, and the Senate, disabling its C2.

The US Justice Department seized domains belonging to a Chinese botnet that was used to hack NASA, the Justice Department, and the Senate. The seized domains were hardcoded into the botnet's code, so the seizures rendered the botnet and its command-and-control servers inoperable. The action disrupted the malware's communication channels and essential operations.

TechCrunch · Security · 20d agoThreat actor in the wild

Critical Flaw in NASA/JPL Open-Source Spacecraft Command Software Allowed Unauthenticated Command Execution

NASA/JPL's AIT-GUI web console (CVSS 9.4) lacked authentication and CSRF protection, letting anyone send unauthenticated commands to spacecraft instruments; fixed in 2.5.2.

Cycode researchers found that AIT-GUI, the browser console of NASA/JPL's open-source AMMOS Instrument Toolkit, ran an HTTP server with no authentication, no session checks, and no CSRF protection on state-changing endpoints, allowing arbitrary commands to spacecraft instruments. The issue combines four weaknesses: binding to 0.0.0.0 regardless of configured host, missing authentication, missing CSRF defense, and path traversal in the /seq and /script/run endpoints. Tracked as GHSA-p9r8-2q67-fp86 with CVSS 9.4, it is fixed in AIT-GUI 2.5.2. The findings came from AI-assisted code analysis confirmed with working proofs-of-concept, including a headless-browser CSRF demonstration.

Security Affairs · 24d agoVulnerability

Cloudflare Workers Spectre Attack Leaks JWT From Co

Researchers demonstrated a remote Spectre attack leaking a JWT between co-located Cloudflare Workers at 12 bits per second, 360x the 2021 rate.

Security researchers showed a remote Spectre attack against Cloudflare Workers that leaked a JWT from a co-located Worker at up to 12 bits per second with 99.16% accuracy, 360 times the 2021 demonstration rate. The attack exploited weaknesses in DyPrIs dynamic process isolation, where long-lived Durable Object invocations could run before isolation and WebSocket-heavy I/O suppressed the branch-misprediction signal. Cloudflare deployed improved DyPrIs, the V8 Sandbox, and MPK-based in-process isolation, and found no indicators of active exploitation over three years.

The Hacker News · 27d agoVulnerability

Lifeforms Can Survive on ‘Significant’ Regions of the Moon, Study Finds

A NASA-led study found microbes like Aspergillus could survive up to seven days in permanently shadowed lunar polar regions.

A study published in Science Advances modeled surface conditions at candidate Artemis landing sites and found significant lunar polar areas may be amenable to microbial survival. The fungus Aspergillus persisted up to seven Earth days in some shadowed regions due to protective pigments and thick cell walls. Findings inform planetary protection planning for upcoming crewed lunar missions.

404 Media · 27d agoOther

NASA Ground Control Software Flaw Enables Unauthenticated Commands

Critical flaws in NASA's AIT-GUI ground control software let unauthenticated attackers send spacecraft commands and execute scripts.

NASA's AIT-GUI ground control software contains critical flaws that expose spacecraft command and script execution to unauthenticated attackers. Anyone able to reach the ground control interface could send unauthorized commands without valid credentials. The report does not indicate that the flaws have been exploited in the wild.

Infosecurity Magazine · 28d agoVulnerability

Related CVEs

  • CVE-2026-600049.887%
    Unauthenticated RCE in Gitea via diffpatch API Git Hook Injection
    Gitea before 1.27.1 contains a critical code injection flaw (CWE-94) in the diffpatch API that allows remote code execution by causing the installation of a Git hook. An attacker can submit a crafted request through the diffpatch API to plant a Git hook, which then executes arbitrary shell commands on the server when Git operations run; the CVSS vector indicates the attack requires no authentication or user interaction, while public reporting describes attackers with repository write access planting hooks to run shell commands. Successful exploitation yields full server compromise (confidentiality, integrity, and availability all rated high), and observed attacks have reportedly dropped a cryptocurrency miner. All Gitea deployments running versions prior to 1.27.1 are affected, with internet-facing instances at greatest risk; public scans identified over 8,300 vulnerable Gitea servers. The flaw is actively exploited in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2026-08-25, and EPSS estimates an 86.8% probability of exploitation within 30 days.
    · Gitea all versions before 1.27.1 KEV PoC ×4moderate
  • CVE-2026-735708.932%
    Unauthenticated OS Command Injection RCE in Synacor Zimbra Collaboration Suite
    CVE-2026-73570 is an OS command injection vulnerability (CWE-78) in Synacor Zimbra Collaboration Suite (ZCS) before 10.1.20, caused by improper sanitization of untrusted input during SNMP notification processing. It is triggered when the optional zimbra-snmp package is installed and SNMP notifications are enabled: an unauthenticated attacker sends specially crafted SMTP requests that the flawed notification path turns into execution of arbitrary operating system commands. Successful exploitation runs commands as the Zimbra user, giving attackers control of the mail server's service account with high confidentiality and integrity impact across the host. Only ZCS deployments running the optional SNMP component with notifications enabled are vulnerable; other Zimbra installs are not exposed to this specific flaw. The flaw is under active exploitation: CISA added it to the KEV catalog on 2026-08-21, Poland's CERT has warned of in-the-wild attacks, unpatched Zimbra servers are reported compromised, and two public proof-of-concept exploits exist.
    · Synacor Zimbra Collaboration Suite (ZCS) before 10.1.20 (when the optional zimbra-snmp package is installed and SNMP notifications are enabled) KEV PoC ×4large
  • CVE-2026-84528.82%
    Memory Buffer Overflow in Citrix NetScaler ADC/Gateway Exploited in the Wild
    CVE-2026-8452 is a memory buffer overflow (CWE-119) in Citrix NetScaler ADC and NetScaler Gateway that applies when the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, or RDP Proxy) or as an AAA virtual server. The flaw is reachable over the network without authentication (CVSS 4.0: AV:N/PR:N), so an unauthenticated attacker can trigger it remotely. Successful exploitation causes unpredictable or erroneous appliance behavior and denial of service, and the high confidentiality score suggests possible disclosure of memory contents; some reporting suggests pre-authentication remote code execution may be possible, though the vendor description emphasizes DoS. Organizations running affected NetScaler appliances in a Gateway or AAA role — a very common configuration for remote access to Citrix virtual apps and desktops — are potentially exposed. The flaw was added to CISA's KEV catalog on 2026-08-26 and is reported as exploited in the wild, with headlines noting the flaw was already patched before exploitation was confirmed.
    · Citrix NetScaler ADC · Citrix NetScaler Gateway KEVlarge

Appears with

vendor NASA 2product AIT-GUI 2organization AI Workforce Consortium 1organization CISA 1organization Cisco 1organization Cycode 1organization Goddard Space Flight Center 1organization U.S. Department of Justice 1organization Huntress 1organization Jet Propulsion Laboratory 1organization Justice Department 1organization Shadowserver Foundation 1organization TU Graz 1organization United States Senate 1organization FBI 1organization Brown University 1
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