VIR Vulnerability Intelligence Relay

CVE-2026-21530

medium
Published 2026-05-12 · Modified 2026-05-14
CVSS v3
6.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS v2
—
VIR risk
6.7

Description

Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.

Predictions

Exploit likelihood
66%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: secure@microsoft.com — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21530

OS impact
OSVersionStatusFixed in
windows windows-affected
windows windowsr2affected
windows windowsaffected10.0.14393.9140

References

CWEs

CWE-415

Verify integrity in audit chain (admin only). AS-IS.