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Servers and applications

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 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.

Severity
Medium 6.9
Published
14 Sept 2007
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.7% in the next 30 daysHigher than 54% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-264
Attack
Needs local access · No login needed
Attacker can
Read data · Change data · Take it down
CVSS vector
AV:L/AC:M/Au:N/C:C/I:C/A:C
Sources
NVD

Affected software

SoftwareAffected versions
SambaServers and applications · cpe:a:samba:samba
  • Version 3.0.25
  • Version 3.0.25a
  • Version 3.0.25b
  • Version 3.0.25c

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2007-4138
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2007-4138