CVE-2022-41318

Name: CVE-2022-41318
Creator: NVD / NIST
Published: 2022-12-25T19:15:10.82+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 2.82%

Last modified Jun 17, 2026

CVE-2022-41318 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A buffer over-read was discovered in libntlmauth in Squid 2.5 through 5.6. Due to incorrect integer-overflow protection, the SSPI and SMB authentication helpers are vulnerable to reading unintended memory locations. EPSS estimates a 2.82% chance of exploitation in the next 30 days.

Description

A buffer over-read was discovered in libntlmauth in Squid 2.5 through 5.6. Due to incorrect integer-overflow protection, the SSPI and SMB authentication helpers are vulnerable to reading unintended memory locations. In some configurations, cleartext credentials from these locations are sent to a client. This is fixed in 5.7.

Metrics

CVSS 3.1

8.6/10

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

EPSS Probability

2.82%

84.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Squid-Cache	Squid	>= 2.5, < 5.7

References

http://www.squid-cache.org/Versions/v4/changesets/SQUID-2022_2.patchPatch, Third Party Advisory
http://www.squid-cache.org/Versions/v5/changesets/SQUID-2022_2.patchPatch, Third Party Advisory
https://github.com/squid-cache/squid/security/advisories/GHSA-394c-rr7q-6g78Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/09/23/2Mailing List, Patch, Third Party Advisory
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2022_2.patchPatch, Third Party Advisory
http://www.squid-cache.org/Versions/v5/changesets/SQUID-2022_2.patchPatch, Third Party Advisory
https://github.com/squid-cache/squid/security/advisories/GHSA-394c-rr7q-6g78Patch, Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/09/23/2Mailing List, Patch, Third Party Advisory

Timeline

Published: Dec 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-41318?

How severe is CVE-2022-41318?

CVE-2022-41318 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 2.82% probability of exploitation in the next 30 days.

How do I fix CVE-2022-41318?

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-2022-41318?

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

Scan your code now

Source: NVD / NIST