#proof-of-concept
6 stories taggedproof-of-concept.

Researcher Says Microsoft's Fix for Defender Flaw Doesn't Hold
A second proof-of-concept, nicknamed ShieldCrash, claims to walk straight past Microsoft's patch for the ShieldBreak vulnerability in Defender.

Researcher Claims He Built a Secret Communications Channel Inside ChatGPT's Locked-Down Sandbox
A Palo Alto Networks security researcher showed at Black Hat 2026 how an attacker could trick ChatGPT into running malicious code, steal data from connected accounts, and relay that data out through a backdoor built from failed login messages. OpenAI says the key components have been removed.

GitLab Flaw Lets Any Logged-In User Run Commands on Self-Hosted Servers
Researcher Yuhang Wu published working exploit code against GitLab 18.11.3 that hijacks the server through two booby-trapped notebooks and a diff request.

Researcher Publishes Windows Privilege-Escalation Exploit Hours After Microsoft's Monthly Patch
A proof-of-concept called LegacyHive targets the Windows User Profile Service, raising fresh questions about coordinated disclosure timing.

A Working Attack Script Is Now Public for the Linux 'Bad Epoll' Root Access Flaw
A proof-of-concept, meaning a ready-made demonstration script that shows exactly how to exploit a flaw, has been released for a serious Linux vulnerability. Unpatched Linux servers are now a much easier target.

CitrixBleed Redux: PoC Drop Triggers Immediate NetScaler Memory-Scrape Campaign
Attackers wasted no time after proof-of-concept code surfaced for a new Citrix NetScaler memory-disclosure bug. The gap between publish and exploit measured in hours, not days.