CVE-2021-31962
CRITICALCVSS 9.4/10EPSS 3.81%
Last modified
CVE-2021-31962 is a critical-severity vulnerability rated 9.4/10 on the CVSS scale. Kerberos AppContainer Security Feature Bypass Vulnerability. EPSS estimates a 3.81% chance of exploitation in the next 30 days.
Description
Kerberos AppContainer Security Feature Bypass Vulnerability
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Microsoft | Windows 10 | All versions | — |
| Microsoft | Windows 10 | 20h2 | — |
| Microsoft | Windows 10 | 21h1 | — |
| Microsoft | Windows 10 | 1607 | — |
| Microsoft | Windows 10 | 1809 | — |
| Microsoft | Windows 10 | 1909 | — |
| Microsoft | Windows 10 | 2004 | — |
| Microsoft | Windows 7 | All versions | Sp1 |
| Microsoft | Windows 8.1 | All versions | — |
| Microsoft | Windows Rt 8.1 | All versions | — |
| Microsoft | Windows Server 2008 | r2 | Sp1 |
| Microsoft | Windows Server 2008 | sp2 | — |
| Microsoft | Windows Server 2012 | All versions | — |
| Microsoft | Windows Server 2012 | r2 | — |
| Microsoft | Windows Server 2016 | All versions | — |
| Microsoft | Windows Server 2016 | 20h2 | — |
| Microsoft | Windows Server 2016 | 2004 | — |
| Microsoft | Windows Server 2019 | All versions | — |
References
- http://packetstormsecurity.com/files/163206/Windows-Kerberos-AppContainer-Enterprise-Authentication-Capability-Bypass.htmlThird Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31962Patch, Vendor Advisory
- http://packetstormsecurity.com/files/163206/Windows-Kerberos-AppContainer-Enterprise-Authentication-Capability-Bypass.htmlThird Party Advisory, VDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31962Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-31962?
Kerberos AppContainer Security Feature Bypass Vulnerability
How severe is CVE-2021-31962?
CVE-2021-31962 has a CVSS score of 9.4/10 (CRITICAL severity). The EPSS model estimates a 3.81% probability of exploitation in the next 30 days.
How do I fix CVE-2021-31962?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-31962?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST