CVE-2022-41916

Name: CVE-2022-41916
Creator: NVD / NIST
Published: 2022-11-15T23:15:27.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.89%

Last modified Jun 17, 2026

CVE-2022-41916 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. EPSS estimates a 0.89% chance of exploitation in the next 30 days.

Description

Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.89%

54.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Heimdal Project	Heimdal	< 7.7.1
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://github.com/heimdal/heimdal/security/advisories/GHSA-mgqr-gvh6-23cxThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00034.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202310-06
https://security.netapp.com/advisory/ntap-20230216-0008/
https://www.debian.org/security/2022/dsa-5287Third Party Advisory
https://github.com/heimdal/heimdal/security/advisories/GHSA-mgqr-gvh6-23cxThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00034.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202310-06
https://security.netapp.com/advisory/ntap-20230216-0008/
https://www.debian.org/security/2022/dsa-5287Third Party Advisory

Timeline

Published: Nov 15, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-41916?

How severe is CVE-2022-41916?

CVE-2022-41916 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.

How do I fix CVE-2022-41916?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-41916?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST