What is CVE-2026-70019?

CVE-2026-70019 is a medium-severity vulnerability in Microsoft Windows 11 23h2, classified under CWE-65. CVSS score: 6.5/10. Published 2026-09-08.

How severe is CVE-2026-70019?

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

Vulnerability in Microsoft Windows 11 23h2

CVE-2026-70019

Windows hard link in Windows Compressed Folder allows an unauthorized attacker to disclose information over a network.

Published 2026-09-08 · last modified 2026-09-16.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.010 (63.6th percentile), scored 2026-10-24.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-65

References

Windows Compressed Folder Information Disclosure Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-70019?: CVE-2026-70019 is a medium-severity vulnerability in Microsoft Windows 11 23h2, classified under CWE-65. CVSS score: 6.5/10. Published 2026-09-08.
How severe is CVE-2026-70019?: Medium severity. CVSS v3 base score is 6.5 out of 10.