What is CVE-2026-69397?

CVE-2026-69397 is a high-severity vulnerability in Microsoft Windows 10 1809, classified under Use After Free. CVSS score: 7.5/10. Published 2026-09-08.

How severe is CVE-2026-69397?

High severity. CVSS v3 base score is 7.5 out of 10.

Use After Free in Microsoft Windows 10 1809

CVE-2026-69397

Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.

Vulnerability class: Use-After-Free

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

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.5th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.5% 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-416 — Use After Free

References

Microsoft OpenSSH for Windows Remote Code Execution Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-69397?: CVE-2026-69397 is a high-severity vulnerability in Microsoft Windows 10 1809, classified under Use After Free. CVSS score: 7.5/10. Published 2026-09-08.
How severe is CVE-2026-69397?: High severity. CVSS v3 base score is 7.5 out of 10.