CVE-2026-21533

CISA KEV
ACT NOW Priority: 0.00 BB Relevance: 1/100
Published: N/A Modified: N/A First seen: 2026-10-29 Status: pending_score

Description

Microsoft Windows Remote Desktop Services contains an improper privilege management vulnerability that could allow an authorized attacker to elevate privileges locally.

CISA Known Exploited Vulnerability

Vendor / Product Microsoft — Windows
Date Added 2026-02-10
Remediation Due 2026-03-03
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21533 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21533

Bug Bounty Relevance

1 / 100
✓ Known exploited (KEV)

CVSS Score

Unscored

EPSS — Exploitation Probability

4.18%
Raw Score 0.041820
Percentile 90.9%
Date 2026-10-28

Intelligence Sources

kev ref →