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CVE-2013-1863

21
FAUCET Score

CVE-2013-1863 describes a vulnerability in Samba 4.x before version 4.0.4, specifically when configured as an Active Directory domain controller. This flaw allows remote authenticated users to perform unauthorized file operations (read, modify, create, delete) on non-default CIFS shares due to world-writable permissions. The vulnerability has a CVSS score of 6.0, indicating a medium severity with network access, medium attack complexity, and partial impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

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:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.0MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Exploitability Score
6.8
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.15%
Probability of exploitation in next 30 days
EPSS Percentile
80.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0215 is in the 87th percentile among its peer group of 1,428 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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-2013-1863Moderate

samba4: Samba 4.0 AD DC files (initially) created as world-writable if additional CIFS file shares are created on the AD DC

Mar 19, 2013

References

samba.org / samba/ftp/patches/security/samba-4.0.3-CVE-2013-1863.patch
Patch
samba.org / samba/security/CVE-2013-1863
Vendor Advisory