A security researcher frustrated with Microsoft has released the BlueHammer Windows zero-day exploit, telling the company, “I ...

Three Defender zero-days exploited since April 10, 2026, enabling privilege escalation and DoS, forcing isolation of affected ...

A zero-day BlueHammer exploit was recently published on GitHub in response to alleged MSRC failures, and although Microsoft ...

Three proof-of-concept exploits are being used in active attacks against Microsoft's built-in security platform; two are ...

Threat actors have been exploiting the BlueHammer Microsoft Defender vulnerability as a zero-day to gain System privileges.

Although the team with Microsoft moved swiftly to patch the BlueHammer vulnerability, other exploits still threaten Microsoft ...

RedSun exploit targets Microsoft Defender zero-day, granting SYSTEM access on fully patched Windows systems with no patch ...

New PoC shows how Microsoft Defender can be tricked into rewriting malicious files into protected locations, enabling ...

Critical154Important1Moderate0LowMicrosoft addresses 163 CVEs in the April 2026 Patch Tuesday release, including two zero-day ...

The vulnerability was revealed by a disgruntled researcher.

The leak online of exploit code for an apparent Windows zero-day flaw dubbed "BlueHammer" could be the sign of a larger issue that security researchers face when collaborating with Microsoft on ...

A security researcher frustrated with Microsoft has released the BlueHammer Windows zero-day exploit, telling the company, “I'm not explaining how this works.” ...