What is CVE-2026-72931?

CVE-2026-72931 is a medium-severity vulnerability in Microsoft Windows 10 1607, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 4.7/10. Published 2026-09-08.

How severe is CVE-2026-72931?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Microsoft Windows 10 1607

CVE-2026-72931

Missing release of resource after effective lifetime in Windows Secure Socket Tunneling Protocol (SSTP) allows an authorized attacker to deny service locally.

Published 2026-09-08 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (26.7th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

References

Windows Secure Socket Tunneling Protocol (SSTP) Denial of Service Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-72931?: CVE-2026-72931 is a medium-severity vulnerability in Microsoft Windows 10 1607, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 4.7/10. Published 2026-09-08.
How severe is CVE-2026-72931?: Medium severity. CVSS v3 base score is 4.7 out of 10.