What is CVE-2026-59685?

CVE-2026-59685 is a high-severity vulnerability in Apache Software Foundation HTTP Server, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-10-01.

How severe is CVE-2026-59685?

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

Buffer overflow in Apache Software Foundation HTTP Server

CVE-2026-59685

Out-of-bounds Write vulnerability in Apache HTTP Server on Windows while processing paths with 8.3 names that may grow when expanded. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Vulnerability class: Buffer Overflow

Published 2026-10-01 · last modified 2026-10-01.

CVSS v3 metric

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

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Apache Software Foundation HTTP Server

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

httpd.apache.org/security/vulnerabilities_24.html (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-59685?: CVE-2026-59685 is a high-severity vulnerability in Apache Software Foundation HTTP Server, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2026-10-01.
How severe is CVE-2026-59685?: High severity. CVSS v3 base score is 7.5 out of 10.