CISA: Windows BlueHammer flaw now exploited by ransomware gangs
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BleepingComputer
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 previously been abused in zero-day attacks.
The U.S. security agency CISA warns against the active misuse of a vulnerability in Microsoft Defender by ransomware attackers. The vulnerability called BlueHammer had made known an anonymous security researcher. (Continue reading)
A security flaw in Microsoft Defender is putting Windows computers at risk. Although patched last April, the vulnerability is being actively exploited by ransomware attackers. The U.S. federal cybersecurity agency is now urging individuals and businesses to immediately install Microsoft's patches to counter the hackers.
BlueHammer Vulnerability Exploited in Ransomware Attacks | #hacking | #cybersecurity | #infosec | #comptia | #pentest | #ransomware - National Cyber Security Consulting
A Microsoft Defender vulnerability tracked as BlueHammer and CVE-2026-33825 is being exploited in ransomware attacks, according to the cybersecurity agency CISA. BlueHammer is one of the several exploits disclosed in recent months by a disgruntled researcher known as Chaotic Eclipse and Nightmare Eclipse. The researcher is unhappy with Microsoft’s handling of vulnerability reports, which is […] Thank you for subscribing to our RSS feed! The post…
The Windows BlueHammer failure has returned to the focus of the security community's attention after CISA confirms that vulnerability is being actively exploited by ransomware groups. The alert reinforces the urgency of applying the security updates provided by Microsoft, especially in corporate environments where Microsoft Defender plays a key role in protecting endpoints. The case also rekindled a delicate debate about the disclosure of vulner…
Windows Defender 'BlueHammer' vulnerability now exploited as part of malware campaigns — CISA issues warning despite patch release on April 14
Late spring and early summer in the cybersecurity world were marked by multiple Windows exploits, thanks to the efforts of the controversial hacker figure Nightmare Eclipse. One of the better-known exploits is BlueHammer, a race condition in Windows Defender that gets you a shell with access to the SYSTEM user with just a small script — in other words, the keys to the kingdom in exchange for a double-click. Microsoft released a patch on April 14…
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