HIGH

CVE-2026-44631

CVSS v3

9.4

HIGH

EPSS Score

0.5 %

exploit probability

CISA KEV

known exploited

Exploitation

—

SSVC status

Description

Microsoft Security Update (CVE-2026-44631)

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H/E:U
Published: 2026-06-19
MSRC Title: Apache HTTP Server: Heap Underflow in `ap_regname` via Signed Char Overflow

Frequently asked questions

What is CVE-2026-44631?

Microsoft Security Update (CVE-2026-44631)

Is CVE-2026-44631 actively exploited?

Active exploitation of CVE-2026-44631 has not been confirmed. The EPSS score is 0.5%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-44631?

CVE-2026-44631 has a CVSS v3 base score of 9.4 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H/E:U.

Is CVE-2026-44631 affecting your environment?

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