Latest Cybersecurity News & Insights

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ShowDoc RCE Flaw CVE-2025-0520 Actively Exploited on Unpatched Servers

A critical security vulnerability impacting ShowDoc, a document management and collaboration service popular in China, has come under active exploitation in the wild. The vulnerability in question is CVE-2025-0520 (aka CNVD-2020-26585), which carries a CVSS score of 9.4 out of 10.0. It relates to a case of unrestricted file upload that stems from improper validation of

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CISA Adds 6 Known Exploited Flaws in Fortinet, Microsoft, and Adobe Software

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added half a dozen security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. The list of vulnerabilities is as follows - CVE-2026-21643 (CVSS score: 9.1) -  An SQL injection vulnerability in  Fortinet FortiClient EMS that could allow an unauthenticated attacker to

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⚡ Weekly Recap: Fiber Optic Spying, Windows Rootkit, AI Vulnerability Hunting and More

Monday is back, and the weekend’s backlog of chaos is officially hitting the fan. We are tracking a critical zero-day that has been quietly living in your PDFs for months, plus some aggressive state-sponsored meddling in infrastructure that is finally coming to light. It is one of those mornings where the gap between a quiet shift and a full-blown incident response is basically

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Your MTTD Looks Great. Your Post-Alert Gap Doesn't

Anthropic restricted its Mythos Preview model last week after it autonomously found and exploited zero-day vulnerabilities in every major operating system and browser. Palo Alto Networks' Wendi Whitmorewarned that similar capabilities are weeks or months from proliferation. CrowdStrike's 2026 Global Threat Report puts average eCrime breakout time at 29 minutes. Mandiant's M-Trends 2026

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Adobe Patches Reader Zero-Day Exploited for Months

The vulnerability is tracked as CVE-2026-34621 and Adobe has confirmed that it can be exploited for arbitrary code execution. The post Adobe Patches Reader Zero-Day Exploited for Months appeared first on SecurityWeek.

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Adobe Patches Actively Exploited Acrobat Reader Flaw CVE-2026-34621

Adobe has released emergency updates to fix a critical security flaw in Acrobat Reader that has come under active exploitation in the wild. The vulnerability, assigned the CVE identifier CVE-2026-34621, carries a CVSS score of 8.6 out of 10.0. Successful exploitation of the flaw could allow an attacker to run malicious code on affected installations. It has been described as

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In Other News: Cyberattack Stings Stryker, Windows Zero-Day, China Supercomputer Hack

Other noteworthy stories that might have slipped under the radar: Jones Day hacked, Internet Bug Bounty program paused due to AI, new Mac stealer malware. The post In Other News: Cyberattack Stings Stryker, Windows Zero-Day, China Supercomputer Hack appeared first on SecurityWeek.

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Marimo RCE Flaw CVE-2026-39987 Exploited Within 10 Hours of Disclosure

A critical security vulnerability in Marimo, an open-source Python notebook for data science and analysis, has been exploited within 10 hours of public disclosure, according to findings from Sysdig. The vulnerability in question is CVE-2026-39987 (CVSS score: 9.3), a pre-authenticated remote code execution vulnerability impacting all versions of Marimo prior to and including

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Microsoft Finds Vulnerability Exposing Millions of Android Crypto Wallet Users

The security hole affected an EngageLab SDK and it was reported by Microsoft to the vendor one year ago. The post Microsoft Finds Vulnerability Exposing Millions of Android Crypto Wallet Users appeared first on SecurityWeek.

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EngageLab SDK Flaw Exposed 50M Android Users, Including 30M Crypto Wallets

Details have emerged about a now-patched security vulnerability in a widely used third-party Android software development kit (SDK) called EngageLab SDK that could have put millions of cryptocurrency wallet users at risk. "This flaw allows apps on the same device to bypass Android security sandbox and gain unauthorized access to private data," the Microsoft Defender

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ThreatsDay Bulletin: Hybrid P2P Botnet, 13-Year-Old Apache RCE and 18 More Stories

Thursday. Another week, another batch of things that probably should've been caught sooner but weren't. This one's got some range — old vulnerabilities getting new life, a few "why was that even possible" moments, attackers leaning on platforms and tools you'd normally trust without thinking twice. Quiet escalations more than loud zero-days, but the kind that matter more in

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Adobe Reader Zero-Day Exploited via Malicious PDFs Since December 2025

Threat actors have been exploiting a previously unknown zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since at least December 2025. The finding, detailed by EXPMON's Haifei Li, has been described as a highly-sophisticated PDF exploit. The artifact ("Invoice540.pdf") first appeared on the VirusTotal platform on November 28, 2025. A second 

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Adobe Reader Zero-Day Exploited for Months: Researcher

Reputable researcher Haifei Li has come across what appears to be a PDF designed to exploit an unpatched vulnerability. The post Adobe Reader Zero-Day Exploited for Months: Researcher appeared first on SecurityWeek.

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New Chaos Variant Targets Misconfigured Cloud Deployments, Adds SOCKS Proxy

Cybersecurity researchers have flagged a new variant ofmalware called Chaosthat'scapable of hitting misconfigured cloud deployments, marking an expansion of the botnet's targeting infrastructure. "Chaos malware is increasingly targeting misconfigured cloud deployments, expanding beyond its traditional focus on routers and edge devices," Darktrace said in a new report.

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Data Leakage Vulnerability Patched in OpenSSL

A total of seven vulnerabilities, most of which can be exploited for DoS attacks, have been patched in OpenSSL. The post Data Leakage Vulnerability Patched in OpenSSL appeared first on SecurityWeek.

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RCE Bug Lurked in Apache ActiveMQ Classic for 13 Years

The vulnerability requires authentication for successful exploitation, but another flaw exposes the Jolokia API without authentication. The post RCE Bug Lurked in Apache ActiveMQ Classic for 13 Years appeared first on SecurityWeek.

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Hackers Targeting Ninja Forms Vulnerability That Exposes WordPress Sites to Takeover

The vulnerability allows hackers to upload arbitrary files to a site’s server and achieve remote code execution. The post Hackers Targeting Ninja Forms Vulnerability That Exposes WordPress Sites to Takeover appeared first on SecurityWeek.

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Anthropic's Claude Mythos Finds Thousands of Zero-Day Flaws Across Major Systems

Artificial Intelligence (AI) company Anthropic announced a new cybersecurity initiative called Project Glasswing that will use a preview version of its new frontier model, Claude Mythos, to find and address security vulnerabilities. The model will be used by a small set of organizations, including Amazon Web Services, Apple, Broadcom, Cisco, CrowdStrike,&

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Critical Flowise Vulnerability in Attacker Crosshairs

The improper validation of user-supplied JavaScript code allows attackers to execute arbitrary code and access the file system. The post Critical Flowise Vulnerability in Attacker Crosshairs appeared first on SecurityWeek.

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Docker CVE-2026-34040 Lets Attackers Bypass Authorization and Gain Host Access

A high-severity security vulnerability has been disclosed in Docker Engine that could permit an attacker to bypass authorization plugins (AuthZ) under specific circumstances. The vulnerability, tracked as CVE-2026-34040 (CVSS score: 8.8), stems from an incomplete fix for CVE-2024-41110, a maximum-severity vulnerability in the same component that came to light in July 2024. "