Is CVE-2007-4138 in the CISA KEV catalog?

No. CVE-2007-4138 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2007-4138?

CVE-2007-4138 has a CVSS v2 base score of 6.9 (MEDIUM).

What is the EPSS score for CVE-2007-4138?

CVE-2007-4138 has an EPSS score of 0.72% (50th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2007-4138?

Upgrade samba on debian 11 to 3.0.26-1 or later.

CVE & CISA-KEV Catalog

CVE-2007-4138

MEDIUM

6.9

CVSS v2

NVD

Description

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.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

sambaDebian

Fixed in:3.0.26-1CVE-2007-4138

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

0.72%probability of exploitation in 30 days

50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Patch2

Government Resource1

us-cert.gov

Other references16

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.