CVE-2007-4138: n/a vulnerability

CVE-2007-4138: The Winbind nss_info extension (nsswitch/idmap_ad.c) in idmap_ad.so in Samba 3.0.25 through 3.0.25c, when t...

The Winbind nss_info extension (nsswitch/idmap_ad.c) in idmap_ad.so in Samba 3.0.25 through 3.0.25c, when the "winbind nss info" option is set to rfc2307 or sfu, grants all local users the privileges of gid 0 when the (1) RFC2307 or (2) Services for UNIX (SFU) primary group attribute is not defined.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 14:46 UTC (UTC+00:00)

Security readout for executives and security teams

This is a legacy Samba Winbind flaw that can give local users membership in group 0 under specific Active Directory identity-mapping settings. Group 0 is highly privileged on Unix-like systems, so affected servers could expose sensitive files or administrative capabilities to ordinary local users. Exposure is most likely on older Samba domain-member systems using Winbind with idmap_ad.so and winbind nss info set to rfc2307 or sfu. Systems not running these legacy versions or not using those nss_info modes are less likely exposed. Treat this as high priority only for legacy Samba estates. It is old and configuration-specific, but affected systems can grant ordinary local users elevated Unix group privileges, creating material risk on shared servers. Mitigation focus: Inventory Samba hosts running versions 3.0.25 through 3.0.25c.; Check Samba and OS vendor advisories for fixed package versions.; Upgrade affected Samba packages through supported vendor channels..

Prepared: Jun 29, 2026, 03:38 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 14, 2007, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
FEDORA-2007-2145CVE reference · vendor-advisory, x_refsource_FEDORA
samba-smb-privilege-escalation(36560)CVE reference · vdb-entry, x_refsource_XF
https://issues.rpath.com/browse/RPL-1705CVE reference · x_refsource_CONFIRM
oval:org.mitre.oval:def:10375CVE reference · vdb-entry, signature

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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