CVE-2026-21525

6.2 MEDIUM CISA KEV - Actively Exploited
Published: February 10, 2026 Modified: March 30, 2026
View on NVD

Description

Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21525
Source: secure@microsoft.com
Vendor Advisory
https://www.vicarius.io/vsociety/posts/cve-2026-21525-detection-script-dos-vulnerability-in-windows-remote-access-connection-manager
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2026-21525-mitigation-script-dos-vulnerability-in-windows-remote-access-connection-manager
Source: af854a3a-2127-422b-91ae-364da2661108
Mitigation Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21525
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.2 / 10.0
EPSS (Exploit Probability)
11.8%
94th percentile
Exploitation Status
Actively Exploited
Remediation due: 2026-03-03

Weaknesses (CWE)

CWE-476

Affected Vendors

microsoft

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