peter bassill · operator
$ cve CVE-2026-81963 JSON

CVE-2026-81963 KEV

7.8
HIGH · CVSS 3.1 · EPSS 0.4% (pctl 31)

Patch first

On CISA KEV — known exploited in the wild, due 2026-09-22.

Description

Improper link resolution before file access ('link following') in Windows Update Stack allows an authorized attacker to elevate privileges locally.

Scoring

CVSS7.8 (HIGH, v3.1)
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.39% — more likely to be exploited than 31% of all CVEs
WeaknessCWE-59
On CISA KEVyes — remediate by 2026-09-22
Public exploitnone known
Published2026-09-08
Last modified2026-09-09

CISA KEV

NameMicrosoft Windows Link Following Vulnerability
Added2026-09-08
Due2026-09-22
Vendor / productMicrosoft / Windows
Ransomware usenone reported

Affected (5)

VendorProduct
microsoftwindows 11 23h2
microsoftwindows 11 24h2
microsoftwindows 11 25h2
microsoftwindows 11 26h1
microsoftwindows server 2025

References

→ the Explorer  ·  watch your stack  ·  NVD