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No exploitation reportedFix available

CVE-2022-41318

No exploitation reported by the sources we read.

  • Published2022-12-25
  • Fixed in5.7
  • WeaknessCWE-190

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2022-12-2519:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-41318?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-41318?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Squid-cache squid
BranchAffectedFixed in
5.7≥ 2.5, < 5.75.7

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libecapAlmaLinux:8all versions · fixed in 1.0.1-2.module_el8.6.0+2741+01592ae8and 1 other package
  • libecapAlmaLinux:8all versions · fixed in 1.0.1-2.module_el8.6.0+3048+383bc947and 1 other package
  • squidAlmaLinux:9all versions · fixed in 7:5.2-1.el9_0.2
  • squidAlmaLinux:8all versions · fixed in 7:4.15-3.module_el8.6.0+3275+7a670b72.2

Full record on NVD

Fix

  1. Update Squid-cache squid to 5.7

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-04-14
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.18.62025-04-14
  • NVDCVSS 3.18.6read 2026-10-23
  • CISA-ADPweakness (CWE)CWE-1902025-04-14
  • NVDweakness (CWE)CWE-190read 2026-10-23
  • FIRST EPSSEPSS score3.0 %2026-10-22
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Published
2022-12-25
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2022-41318?

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.

Is CVE-2022-41318 actively exploited?

Active exploitation of CVE-2022-41318 has not been confirmed. Its EPSS score was 3.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-41318?

CVE-2022-41318 has a CVSS v3 base score of 8.6 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

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