CVE-2021-31199: Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability
CVE-2021-31199 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03
Microsoft Enhanced Cryptographic Provider contains an elevation of privilege vulnerability that allows a local attacker to gain elevated permissions on a target system. The vulnerability has been observed being exploited in the wild and is tracked in CISA's Known Exploited Vulnerabilities catalog.
Yes. CVE-2021-31199 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-31199?
Critical severity, with a CVSS score of 7.8, published 3 November 2021.
Which products and versions are affected?
Microsoft Windows 10 1507, 1607, 1809, 1909, 2004, 20H2, 21H1; Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2004, 20H2; Microsoft Windows 7 SP1; Microsoft Windows 8.1 -; and 1 more.
Is there a fix for CVE-2021-31199?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2021-31199 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2021-31199?
Check whether you run Microsoft Enhanced Cryptographic Provider. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Microsoft Windows 10 1507, 1607, 1809, 1909, 2004, 20H2, 21H1
Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2004, 20H2
Microsoft Windows 7 SP1
Microsoft Windows 8.1 -
Microsoft Windows RT 8.1 -
Timeline
2021-06-08: disclosed: NVD Published Date
2021-11-03: kev added: Date added to CISA Known Exploited Vulnerabilities Catalog