What is CVE-2026-69781?

CVE-2026-69781 is a medium-severity vulnerability in Microsoft Windows 11 24h2, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 6.5/10. Published 2026-09-08.

How severe is CVE-2026-69781?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Microsoft Windows 11 24h2

CVE-2026-69781

Missing release of memory after effective lifetime in Windows DHCP Client allows an unauthorized attacker to deny service over an adjacent network.

Published 2026-09-08 · last modified 2026-09-10.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.1th percentile), scored 2026-10-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

Windows DHCP Client Denial of Service Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-69781?: CVE-2026-69781 is a medium-severity vulnerability in Microsoft Windows 11 24h2, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 6.5/10. Published 2026-09-08.
How severe is CVE-2026-69781?: Medium severity. CVSS v3 base score is 6.5 out of 10.