Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability (CVE-2020-1040)
Severity: critical · Patch status: patched · Since 2021-11-03 · CVE-2020-1040
Microsoft Hyper-V RemoteFX vGPU contains an improper input validation vulnerability due to the host server failing to properly validate input from an authenticated user on a guest operating system. Successful exploitation allows for remote code execution on the host operating system. CISA added CVE-2020-1040 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means attackers are exploiting it in the wild.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by May 3, 2022 (BOD 22-01); treat that as the outer limit.
Sources
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