CVE intelligence

CVE-2026-33007

Vulnerability intelligence

Published May 4, 2026Sources checked Oct 27, 2026

5.3MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-33007 and is rated Medium severity with a CVSS score of 5.3. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Ubuntu Security Notices guidance

Vendor revision: Sep 10, 2026

USN-8571-1 fixed vulnerabilities in Apache HTTP Server.

Microsoft Security Response Center guidance

Vendor revision: Aug 10, 2026

CBL-Mariner Releases

Vendor-listed releases

2.4.67-1

CISA KEVNot listedBased on the latest collected catalog

EPSS0.5%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-33007?

A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration.

Users are recommended to upgrade to version 2.4.67, which fixes this issue.

Source: NVD