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Appaloosa Scout

KEV · Actively exploited

CVE-2021-36934

HIGH 7.8 KEV

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 vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
An attacker must have the ability to execute code on a victim system to exploit this vulnerability.
After installing this security update, you must manually delete all shadow copies of system files, including the SAM database, to fully mitigate this vulnerabilty. Simply installing this security update will not fully mitigate this vulnerability. See KB5005357- Delete Volume Shadow Copies.

Attack vector : Local No user interaction
Show raw CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS 67.25% exploit likely percentile 99.2%

CISA Known Exploited Vulnerability

Added to KEV
2022-02-10
Remediation deadline
2022-02-24
Required action
Apply updates per vendor instructions.
Ransomware
Unknown (not documented by CISA)

OS versions that fix this CVE

This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.

View on NVD ↗ CISA KEV catalog ↗ Advisory · msrc.microsoft.com Advisory · portal.msrc.microsoft.com