Is CVE-2026-33006 in the CISA KEV catalog?

No. CVE-2026-33006 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-33006?

CVE-2026-33006 has a CVSS v3 base score of 4.8 (Moderate).

What is the EPSS score for CVE-2026-33006?

CVE-2026-33006 has an EPSS score of 0.56% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-33006?

Upgrade apache2 on debian 11 to 2.4.67-1~deb11u1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2026-33006

MEDIUM

4.8

CVSS v3

NVD

Description

A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker. Users are recommended to upgrade to version 2.4.67, which fixes this issue.

CWE-208

How to fix

Remediation Available

apache2Debian

Fixed in:2.4.67-1~deb11u1CVE-2026-33006

Fixed in:2.4.67-1~deb12u2CVE-2026-33006

Fixed in:2.4.67-1~deb13u2CVE-2026-33006

Fixed in:2.4.67-1CVE-2026-33006

httpdRed Hat / RHEL

Fixed in:main@noarchRHSA-2026:17080

Fixed in:main@aarch64RHSA-2026:17080

Fixed in:main@srcRHSA-2026:17080

Fixed in:main@x86_64RHSA-2026:17080

httpdRocky

Fixed in:main@aarch64RHSA-2026:17080

Fixed in:main@x86_64RHSA-2026:17080

Fixed in:main@noarchRHSA-2026:17080

Fixed in:main@srcRHSA-2026:17080

apache2Ubuntu

Fixed in:2.4.52-1ubuntu4.20USN-8239-1

Fixed in:2.4.58-1ubuntu8.12USN-8239-1

Fixed in:2.4.64-1ubuntu3.4USN-8239-1

Apache Lounge httpdWindows application

Affected:2.4.67Fixed in:2.4.67Apache Lounge

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploit Intelligence

0.56%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Vendor Advisory1

httpd.apache.org

Third-Party Advisory1

openwall.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-04.