Tag: proof of concept
27 articles
Attackers Exploit SharePoint Flaw After Public PoC Release
Microsoft warned that a critical SharePoint flaw, patched in July 2026, could allow attackers to bypass authentication and disclose files or modify data. This vulnerability, tracked as CVE-2026-55040, has now been exploited by attackers following the public release of a proof-of-concept exploit.
Hackers Exploit New Microsoft SharePoint Vulnerability in Attacks
Hackers are already exploiting a newly discovered critical flaw in Microsoft SharePoint, with over 8,500 servers exposed online and vulnerable to attacks. This authentication bypass vulnerability, known as CVE-2026-55040, allows hackers to disclose files, modify data, and wreak havoc on your system.
CSS Attacks Break Webmail Defenses to Steal Passwords and Tokens
Researchers have discovered alarming proof-of-concept techniques that allow attackers to exploit styled HTML in emails, breaking through webmail defenses to steal passwords, tokens, and even hijack trusted actions. This vulnerability affects major email services including Outlook, Gmail, and Yahoo Mail, and public proof-of-concept code is readily available.
GitLab RCE Exploit Published, Targets Unpatched Servers
A security researcher has just published a working exploit that can execute commands on unpatched GitLab servers, putting sensitive data and systems at risk. If your GitLab server is unpatched, it's crucial to update now to prevent potential code execution and data breaches.
AWS Kiro Flaw Enables Remote Code Execution Through Poisoned Web Pages
Researchers just uncovered a major flaw in AWS Kiro that lets hackers execute remote code through manipulated web pages, putting developers' machines at risk. A simple request to summarize a webpage was all it took to expose this vulnerability.
Windows Zero-Day Exploit LegacyHive Grants Hackers Admin Privileges
A security researcher, known as Nightmare Eclipse, has uncovered a new Windows zero-day exploit called LegacyHive, which can grant hackers admin privileges with just a few simple steps and some standard user credentials. This alarming vulnerability targets the Windows User Profile Service, putting users at risk of serious security breaches.
Microsoft Faces New Zero-Day Exploit Disclosure Amid Ongoing Security Dispute
A security researcher has unveiled a proof-of-concept exploit, called LegacyHive, that targets a vulnerability in Windows User Profile Service, allowing for a potential elevation of privileges. This newly disclosed exploit requires just a standard user credential and a third username to launch.
Nightmare Eclipse Unveils Windows Zero-Day Exploit
A security researcher is sounding the alarm about a newly unveiled Windows zero-day exploit, dubbed LegacyHive, which targets the Windows User Profile Service and could allow for a full system compromise. The proof-of-concept exploit, published by a zero-day hunter known as NightmareEclipse, is just a glimpse of the potential damage this vulnerability could cause.
Ghostcommit Exposes AI Code Reviewers to Secret Theft via Image Steganography
Researchers have uncovered a sneaky way to steal secrets from AI code reviewers using image steganography, as demonstrated in a proof-of-concept on GitHub. This Ghostcommit technique hides malicious instructions inside PNG images, exploiting a gap in the review process.
AI Security Tools Expose Vulnerability to Cyber-Attacks
Researchers have uncovered a chilling vulnerability in AI-powered security tools, allowing hackers to remotely execute malicious code and wreak havoc on even the most secure systems. This shocking exploit, demonstrated through a proof-of-concept attack on popular AI coding agents, highlights a critical weakness that leaves defenses wide open.
Researcher Releases Zero-Day Exploits, Bypassing Disclosure Norms
A pseudonymous security researcher, known as "bikini," has made a bold move by releasing over 30 proof-of-concept exploits for zero-day vulnerabilities in open-source projects, sparking both interest and concern in the cybersecurity community. The researcher behind the Exploitarium GitHub repository is urging users to explore these vulnerabilities for research purposes only.
libssh2 Flaw Exposes Clients to Code Execution Risk
A critical flaw in libssh2, known as CVE-2026-55200, can be exploited by a malicious SSH server to trigger memory corruption on a connecting client, with no credentials or user interaction required. This vulnerability can be easily triggered with a public proof-of-concept now available.
Apple SecureROM Exploit Bypasses Patching on A12, A13 Chips
Security researchers have uncovered a major vulnerability in Apple's A12 and A13 chips, exploiting a flaw in the Synopsys DWC2 USB controller to gain bootROM-level control and bypass patching. This breakthrough could pave the way for new avenues of attack on Apple devices.
Disgruntled Bug Hunter Exposes New Windows 0-Day Vulnerability
A disgruntled bug hunter, known as Nightmare Eclipse, has revealed a new zero-day vulnerability called RoguePlanet, which can give attackers SYSTEM-level control over fully patched Windows 10 and 11 systems. The exploit, fueled by a grudge against Microsoft, targets a weakness in Windows Defender.
Microsoft Defender Zero-Day Exploited for SYSTEM Access
A security researcher, known as Chaotic Eclipse, has discovered a Microsoft Defender zero-day exploit, dubbed RoguePlanet, that can give attackers unrestricted access to compromised machines. The proof-of-concept exploit, released under the handle MSNightmare, can yield a shell with SYSTEM-level privileges, allowing hackers to run arbitrary code and perform unauthorized actions.
AI Worm Uses Open-Weight Models to Spread, Evade Defenses
Imagine a self-navigating AI worm that can identify vulnerabilities and gain access to over 70% of a network's hosts - in a test, it found 31.3 vulnerabilities and elevated access on 23.1 hosts in just 15 isolated runs. Researchers at the University of Toronto and elsewhere have now created a proof-of-concept AI-driven worm to demonstrate this unsettling possibility.
Bug Hunter Exposes Microsoft VS Code Flaw in Protest of Disclosure Handling
A bug hunter's frustrating experience with Microsoft's disclosure process sparked a protest, as Ammar Askar publicly exposed a VS Code flaw that could allow attackers to steal OAuth tokens and access GitHub repositories. Askar's proof-of-concept exploit highlights the vulnerability, which was previously mishandled by Microsoft's security response team.
VS Code Zero-Day Vulnerability Exposes GitHub Tokens to Theft
A security researcher just revealed a shocking VS Code zero-day vulnerability that lets attackers swipe your GitHub authentication tokens with just one click, exposing your online projects to potential theft. This exploit cleverly abuses VS Code's system to run malicious code and extract sensitive tokens.
ChatGPT Exposes Users to Prompt Injection Attacks via Browser Content
Researchers have uncovered a vulnerability in ChatGPT that leaves users open to prompt injection attacks, where malicious content is embedded into web pages and then summarized by the AI system as legitimate information. This loophole could put users at risk of falling prey to spoofed security alerts and other online threats.
Microsoft Discloses Mitigations for YellowKey Windows Zero-Day Vulnerability
Microsoft has issued urgent guidance to mitigate a newly publicized Windows zero-day vulnerability, dubbed YellowKey, which could allow attackers to bypass security features. The tech giant is working on a fix, but in the meantime, it's urging users to follow its interim guidance to stay protected.
Microsoft Alters Edge to Mitigate Password Exposure Risk
Microsoft is taking a major step to boost password security in its Edge browser, rolling out a defense-in-depth change to mitigate the risk of password exposure. This update will be applied across all supported Edge versions, prioritizing a swift rollout to protect users.
BitLocker Zero-Day Exposes Windows Drives to Unauthorized Access
A security researcher, Chaotic Eclipse, has dropped a bombshell by releasing proof-of-concept code for two unpatched Windows vulnerabilities, citing frustration with Microsoft's handling of previous bug reports. This move exposes Windows drives to unauthorized access, even with TPM+PIN protection in place.
GhostLock Exploits Windows API to Disrupt File Access
Meet GhostLock, a proof-of-concept that cleverly exploits Windows API to disrupt file access, causing operational downtime without data loss, similar to the impact of ransomware. By manipulating the CreateFileW sharing parameter, GhostLock effectively locks files, leaving other processes in the dark with a sharing violation error.
Anthropic's AI Tool Exposes to One-Click Remote Code Execution Risk
A single click on Claude Code's generic dialog can unleash a major security risk, allowing an unsandboxed Node.js process to spawn with full user privileges. This vulnerability can be exploited using just two common JSON files, putting developers at risk of one-click remote code execution.