CVE-2026-59685
Received Received - Intake

Out-of-Bounds Write in Apache HTTP Server on Windows

Publication date: 2026-10-01

Last updated on: 2026-10-01

Assigner: Apache Software Foundation

Description
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.

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Meta Information

Published
2026-10-01
Last Modified
2026-10-01
Generated
2026-10-01
AI Q&A
2026-10-01
EPSS Evaluated
N/A
NVD
CVE-2026-59685
EUVD
EUVD-2026-90899

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
apache http_server From 2.4.0 (inc) to 2.4.68 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This is an out-of-bounds write vulnerability in Apache HTTP Server on Windows. It occurs when processing file paths with 8.3 names (short names) that expand in length. The server fails to properly handle the expanded path size, leading to memory corruption.

Detection Guidance

This vulnerability affects Apache HTTP Server versions 2.4.0 through 2.4.68 on Windows. To detect it, check your Apache version using 'httpd -v' or 'apache2 -v'. If your version falls within the affected range, the system is potentially vulnerable. No specific commands are provided for detection beyond version verification.

Impact Analysis

An attacker could exploit this to execute arbitrary code, crash the server, or gain unauthorized access. Systems running vulnerable Apache versions on Windows are at risk if they process user-supplied paths.

Compliance Impact

The vulnerability is an out-of-bounds write issue in Apache HTTP Server on Windows, which could lead to memory corruption or arbitrary code execution. This type of vulnerability may impact compliance with standards like GDPR or HIPAA by potentially exposing sensitive data or disrupting system integrity, though specific compliance impacts depend on deployment context and mitigations in place.

Mitigation Strategies

Upgrade Apache HTTP Server to a version beyond 2.4.68 to address the out-of-bounds write vulnerability in Windows path handling.

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