Vulnerability in Microsoft Windows 10 Version 1809
CVE-2021-36934
<p>An elevation of privilege vulnerability exists because of overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database. An attacker who successfully exploited this vulner…
EPSS: 0.904 (99.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:T/RC:C.
Affected products
- Microsoft Windows 10 Version 1809 — versions 10.0.0
- Microsoft Windows 10 Version 1909 — versions 10.0.0
- Microsoft Windows 10 Version 2004 — versions 10.0.0
- Microsoft Windows 10 Version 20h2 — versions 10.0.0
- Microsoft Windows 10 Version 21h1 — versions 10.0.0
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36934 (x_refsource_MISC)
- packetstormsecurity.com/files/164006/HiveNightmare-AKA-SeriousSAM.html (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-36934?
- CVE-2021-36934 is a high-severity vulnerability in Microsoft Windows 10 Version 1809. CVSS score: 7.8/10. Published 2021-07-22.
- How severe is CVE-2021-36934?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-36934 known to be exploited?
- Yes. CVE-2021-36934 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-02-10), indicating it is being actively exploited. 153 public proof-of-concept repositories are indexed.