APT28 Tied to CVE-2026-21513 MSHTML 0-Day Exploited Before Feb 2026 Patch Tuesday

A recently disclosed security flaw patched by Microsoft may have been exploited by the Russia-linked state-sponsored threat actor known as APT28, according to new findings from Akamai. The vulnerability in question is CVE-2026-21513 CVSS score: 8.8, a high-severity security feature bypass affecti...

ZeroDayBench: Evaluating LLM Agents on Unseen Zero-Day Vulnerabilities for Cyberdefense

Large language models LLMs are increasingly being deployed as software engineering agents that autonomously contribute to repositories. A major benefit these agents present is their ability to find and patch security vulnerabilities in the codebases they oversee. To estimate the capability of...

PT-2026-22521

🚨 Chrome Zero-Day CVE-2026-19875: Remote code execution exploit in latest versions. 1M+ vulnerable systems. Patch ASAP. https://t.co/QQ5d87zep9...

elite-0day-researcher

No d...

How to understand and avoid Advanced Persistent Threats

By definition, an advanced persistent threat APT is a prolonged, targeted attack on a specific victim with the intention to compromise their system and gain information from or about that target. About a decade ago, the term was mostly used for state-sponsored threat actors. I used threat actors...

ThreatFormer-IDS: Robust Transformer Intrusion Detection with Zero-Day Generalization and Explainable Attribution

Intrusion detection in IoT and industrial networks requires models that can detect rare attacks at low false-positive rates while remaining reliable under evolving traffic and limited labels. Existing IDS solutions often report strong in-distribution accuracy, but they may degrade when evaluated ...

Defense Contractor Employee Jailed for Selling 8 Zero-Days to Russian Broker

A 39-year-old Australian national who was previously employed at U.S. defense contractor L3Harris has been sentenced to a little over seven years in prison for selling eight zero-day exploits to Russian exploit broker Operation Zero in exchange for millions of dollars. Peter Williams pleaded guil...

MulCovFuzz: A Multi-Component Coverage-Guided Greybox Fuzzer for 5G Protocol Testing

As mobile networks transition to 5G infrastructure, ensuring robust security becomes more important due to the complex architecture and expanded attack surface. Traditional security testing approaches for 5G networks rely on black-box fuzzing techniques, which are limited by their inability to...

PT-2026-27071

Exploit the UnExploitable ... CVE-2026-22802 Cacti Authentication bypass. Affected versions = 1.2.31 you can find the writeup in my blog post: https://t.co/th88qOl8At security cybersecurity OSCP exploitdevelopment ZeroDay https://t.co/ezOsLsMViU...

Multiple Zero-Day Flaws in PDF Platforms Enable XSS and One-Click Attacks

16 zero-day security flaws found in Foxit and Apryse PDF platforms could lead to account takeover and RCE. Learn how AI identified these risks...

⚡ Weekly Recap: Double-Tap Skimmers, PromptSpy AI, 30Tbps DDoS, Docker Malware & More

Security news rarely moves in a straight line. This week, it feels more like a series of sharp turns, some happening quietly in the background, others playing out in public view. The details are different, but the pressure points are familiar. Across devices, cloud services, research labs, and ev...

A week in security (February 16 – February 22)

Last week on Malwarebytes Labs: Age verification vendor Persona left frontend exposed, researchers say Facebook ads spread fake Windows 11 downloads that steal passwords and crypto wallets AI-generated passwords are a security risk Intimate products maker Tenga spilled customer data Meta patents ...

Evolution Cyber Intelligence

This is a book written by indoushka that covers the evolution of cyber intelligence from historical methodologies to modern day attacks. Written in Arabic...

CVE-2026-2048

creationtimestamp| type| source ---|---|--- 2026-02-19 05:00:00+00:00| seen| http://www.zerodayinitiative.com/advisories/ZDI-26-121/ 2026-02-21 00:00:29+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mfdcwuu6qp2u 2026-02-25 00:40:10+00:00| seen|...

CVE-2026-2044

creationtimestamp| type| source ---|---|--- 2026-02-19 05:00:00+00:00| seen| http://www.zerodayinitiative.com/advisories/ZDI-26-118/ 2026-02-21 00:02:18+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mfdd25aefq2d 2026-02-25 01:00:14+00:00| seen|...

CVE-2026-2047

creationtimestamp| type| source ---|---|--- 2026-02-19 05:00:00+00:00| seen| http://www.zerodayinitiative.com/advisories/ZDI-26-120/ 2026-02-21 00:00:21+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mfdcwo4yyx2u 2026-02-25 00:20:09+00:00| seen|...

CVE-2026-2040

creationtimestamp| type| source ---|---|--- 2026-02-19 05:00:00+00:00| seen| http://www.zerodayinitiative.com/advisories/ZDI-26-122/...

CVE-2026-2045

creationtimestamp| type| source ---|---|--- 2026-02-19 05:00:00+00:00| seen| http://www.zerodayinitiative.com/advisories/ZDI-26-119/ 2026-02-21 00:02:25+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mfdd2dwswl2k 2026-02-25 05:40:09+00:00| seen|...

AI Found Twelve New Vulnerabilities in OpenSSL

The title of the post is"What AI Security Research Looks Like When It Works," and I agree: In the latest OpenSSL security release on January 27, 2026, twelve new zero-day vulnerabilities meaning unknown to the maintainers at time of disclosure were announced. Our AI system is responsible for the...

Dell RecoverPoint for VMs Zero-Day CVE-2026-22769 Exploited Since Mid-2024

A maximum severity security vulnerability in Dell RecoverPoint for Virtual Machines has been exploited as a zero-day by a suspected China-nexus threat cluster dubbed UNC6201 since mid-2024, according to a new report from Google Mandiant and Google Threat Intelligence Group GTIG. The activity...