CVE record · CVE-2023-3961

Samba: smbd allows client access to unix domain sockets on the file system as root

CVSS 9.1 CriticalCriticalEPSS 0.027 · 85th percentile

Critical, because:

CVSS score 9.1: 9.0 or more.

Published by the CVE Program (CNA: redhat) at 3 Nov 2023, 12:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 8 Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.6-2.el8_9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8 Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.6-2.el8_9 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.15.5-13.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.17.5-4.el8_8 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.6-101.el9_3 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.18.6-101.el9_3 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.15.5-111.el9_0 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.17.5-104.el9_2 to before * rpm Other versions: affected
Red Hat	Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Package name: samba https://access.redhat.com/downloads/content/package-browser/	unaffected 0:4.15.5-13.el8_6 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: samba https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 6 Package name: samba4 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: samba https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Storage 3 Package name: samba https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unknown

Identifiers: CVE-2023-3961
CNA: redhat
Weakness (CWE): CWE-22
Tags: Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.6 Extended Update Support
Red Hat Enterprise Linux 8.8 Extended Update Support
Red Hat Enterprise Linux 9
Red Hat Enterprise Linux 9.0 Extended Update Support
Red Hat Enterprise Linux 9.2 Extended Update Support
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 6
Path traversal
Published: 3 Nov 2023
Updated: 20 Nov 2025

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.1	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.027, the 85th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 3 Nov 2023. New records show when each source confirmed them.

Sources

References from the CNA

access.redhat.com/errata/RHSA-2023:6209 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:6744 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7371 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7408 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7464 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7467 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2023-3961 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2241881 issue-trackingredhat
bugzilla.samba.org/show_bug.cgi?id=15422
www.samba.org/samba/security/CVE-2023-3961.html

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.