What is CVE-2026-44631?

CVE-2026-44631 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Apache HTTP Server: Heap Underflow in `ap_regname` via Signed Char Overflow

Which CVE IDs does CVE-2026-44631 cover?

CVE-2026-44631 covers the following CVE IDs: CVE-2026-44631. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-44631?

CVE-2026-44631 has a CVSS v3 base score of 9.4, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-44631?

CVE-2026-44631 affects 1 product, including: azl3 httpd 2.4.67-1 on Azure Linux 3.0.

CVE-2026-44631HighCVSS 9.4

Apache HTTP Server: Heap Underflow in `ap_regname` via Signed Char Overflow

Vendor

Microsoft Security Response Center (MSRC)

Published

June 11, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-44631 →

🎯 Affected products1

azl3 httpd 2.4.67-1 on Azure Linux 3.0

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44631