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CVE-2014-8143

22
FAUCET Score

CVE-2014-8143 describes a privilege escalation vulnerability in Samba 4.0.x, 4.1.x, and 4.2.x when configured as an Active Directory Domain Controller. An authenticated attacker can exploit this by manipulating the userAccountControl attribute to set the UF_SERVER_TRUST_ACCOUNT bit, thereby gaining elevated privileges. This vulnerability carries a high CVSS score of 8.5, indicating a severe impact with complete compromise of confidentiality, integrity, and availability. It can be exploited remotely by an authenticated user, but requires moderate attack complexity. Despite its severity, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are also minimal.

Impacted Technologies

VendorProductVersion(s)CPE
4.0.0CPE matchmatch criteria
cpe:2.3:a:samba:samba:4.0.0:*:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:a:samba:samba:4.0.1:*:*:*:*:*:*:*
4.0.2CPE matchmatch criteria
cpe:2.3:a:samba:samba:4.0.2:*:*:*:*:*:*:*
4.0.3CPE matchmatch criteria
cpe:2.3:a:samba:samba:4.0.3:*:*:*:*:*:*:*
4.0.4CPE matchmatch criteria
cpe:2.3:a:samba:samba:4.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

8.5HIGH

AV:N/AC:M/Au:S/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Exploitability Score
6.8
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.26%
Probability of exploitation in next 30 days
EPSS Percentile
90.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0426 is in the 88th percentile among its peer group of 1,162 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2014-8143Moderate

samba: Privileges elevation to Active Directory Domain Controller

Jan 15, 2015

References

lists.opensuse.org / opensuse-security-announce/2015-02/msg00031.html
lists.opensuse.org / opensuse-security-announce/2016-04/msg00042.html
download.samba.org / pub/samba/patches/security/samba-4.0.23-CVE-2014-8143.patch
Patch
download.samba.org / pub/samba/patches/security/samba-4.1.15-CVE-2014-8143.patch
Patch
secunia.com / advisories/62594
exchange.xforce.ibmcloud.com / vulnerabilities/100596
samba.org / samba/security/CVE-2014-8143
PatchVendor Advisory
securityfocus.com / bid/72278
securitytracker.com / id/1031615
slackware.com / security/viewer.php
ubuntu.com / usn/USN-2481-1