Microsoft releases patch for Defender zero-day vulnerability RoguePlanet
The vulnerability, tracked as CVE-2026-50656, was revealed by a security researcher using the handle "Nightmare Eclipse.
Zero-Day
20 articles
Microsoft patches RoguePlanet Defender zero-day vulnerability
Microsoft has released a security patch to address a Defender zero-day vulnerability known as "RoguePlanet," disclosed after the June 2026 Patch Tuesday. [.
FortiBleed: Credential Reuse, Legacy Hashes, and the Risk of Internet-Exposed FortiGate Devices
Key Takeaways FortiBleed refers to June 2026 public reporting of large-scale credential exposure and abuse targeting internet-reachable FortiGate management ...
Felons, Fraudsters Flog Offensive Cybersecurity Startup
A cybersecurity startup dangling millions of dollars to acquire zero-day security vulnerabilities in popular software is run by a pair of far-right conspirac...
FortiBleed Credential Theft Connected to INC and Lynx Ransomware
FortiBleed, the Fortinet credential theft campaign, is now connected to INC Ransom and Lynx, with a Nextcloud zero-day vulnerability also under investigation.
Researcher Behind 'Exploitarium' Explains Release of Undisclosed Zero-Day Exploits
Infosecurity spoke with the researcher who dumped over 30 proof-of-concept exploits without disclosing the vulnerabilities first
Anthropic buffa Library Zero-Day Lets Attackers Trigger Memory-Amplification DoS
Anthropic’s Rust-based protobuf library, buffa, has been discovered to have a zero-day memory amplification denial-of-service (DoS) vulnerability. This flaw ...
BlueHammer Vulnerability Exploited in Ransomware Attacks
The Microsoft Defender vulnerability CVE-2026-33825 was exploited in the wild as a zero-day before patches were released. The post BlueHammer Vulnerability E...
Anonymous researcher dumps zero-day exploits for multiple software products
The disclosed exploits include a critical pre-authentication remote code execution vulnerability in libssh2 (CVE-2026-55200) and an authentication bypass vul...
CISA: Windows BlueHammer flaw now exploited by ransomware gangs
CISA confirmed on Monday that ransomware gangs are now exploiting a Microsoft Defender privilege escalation vulnerability, dubbed BlueHammer, that has previo...
Mozilla warns of indirect prompt injection risk in AI coding agents
A malicious GitHub repository can silently compromise a developer’s machine without containing a single line of malicious code, security researchers at Mozil...
NAIC confirms cyberattack after ShinyHunters claims 3.1TB data theft
The attack exploited a zero-day vulnerability in Oracle PeopleSoft, an enterprise resource planning software.
Cisco Catalyst SD-WAN Zero-Day CVE-2026-20245 Exploited Months Before Disclosure
Hackers exploited Cisco Catalyst SD-WAN flaw CVE-2026-20245 as a zero-day months before disclosure, enabling privileged command execution. Google-owned Mandi...
Cisco SD-WAN Zero-Day Exploited Months Before Patching
CVE-2026-20245, the 7th Cisco SD-WAN vulnerability exploited in 2026, was used for months prior to its disclosure and patching. The post Cisco SD-WAN Zero-Da...
Cisco Catalyst SD-WAN Manager Zero-Day Exploited to Gain Root Access via Malicious CSV Upload
Cisco Catalyst SD-WAN Manager instances are currently being targeted in a zero-day exploitation campaign that allows attackers to escalate their privileges t...
Cisco Catalyst SD-WAN Zero-Day CVE-2026-20245 Exploited to Gain Root Access
An unknown threat actor exploited a recently disclosed high-severity security flaw impacting Cisco Catalyst SD-WAN as a zero-day at least two months before i...
Mandiant reveals how Cisco SD-WAN zero-day attacks gained root access
New details have been revealed on how hackers exploited a Cisco Catalyst SD-WAN vulnerability tracked as CVE-2026-20245 in zero-day attacks to create rogue r...
Malicious hackers exploit Cisco zero-day for highest access level at communications service provider
Mandiant detailed the incident in a blog post Wednesday, but it’s unclear who was behind it or if they managed to get broad visibility into the victim’s inte...
Five Eyes Agencies Warn AI Is Accelerating Cyber Threats and Zero-Day Exploitation
The Five Eyes cyber security agencies have issued a joint warning that artificial intelligence is rapidly accelerating cyber threats, including the exploitat...
What the Latest ShinyHunters Breaches Reveal About Modern Cyberattacks
Groups like ShinyHunters are demonstrating that attackers do not necessarily need malware or zero-day exploits to cause massive damage. The post What the Lat...