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CVE-2015-5252

24
FAUCET Score

CVE-2015-5252 describes a vulnerability in Samba 3.x and 4.x versions prior to specified patches, where remote attackers can bypass file-access restrictions. This flaw, residing in the vfs.c component of smbd, allows an attacker to use a symlink to access files outside of an intended share when share names have certain substring relationships. Rated with a CVSS score of 7.2 (High), it presents a low-complexity network attack vector that could lead to partial confidentiality and integrity compromise. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, < 4.1.22CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.2.0, < 4.2.7CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
>= 4.3.0, < 4.3.3CPE matchmatch criteria
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
13.27%
Probability of exploitation in next 30 days
EPSS Percentile
96.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1327 is in the 94th percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: samba4-0:4.0.0-67.el6_7.rc4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: samba-0:3.6.23-24.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: samba-0:4.2.3-11.el7_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.1 for RHEL 6Fixed in: samba-0:4.1.17-16.el6rhs
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Gluster Storage 3.1 for RHEL 7Fixed in: samba-0:4.2.4-9.1.el7rhgs
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: samba
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: samba3x

Vendor Advisories (1)

redhatCVE-2015-5252Low

samba: Insufficient symlink verification in smbd

Dec 16, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-December/174076.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-December/174391.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-12/msg00019.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-12/msg00020.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-12/msg00032.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-12/msg00033.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-01/msg00002.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-01/msg00017.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-04/msg00042.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-04/msg00046.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-04/msg00047.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-04/msg00048.html
Mailing ListThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
git.samba.org
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
security.gentoo.org / glsa/201612-47
Third Party Advisory
samba.org / samba/security/CVE-2015-5252.html
ExploitVendor Advisory
debian.org / security/2016/dsa-3433
Third Party Advisory
oracle.com / technetwork/topics/security/bulletinjan2016-2867206.html
Third Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinjan2016-2867209.html
Third Party Advisory
securityfocus.com / bid/79733
Third Party AdvisoryVDB Entry
securitytracker.com / id/1034493
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2855-1
Third Party Advisory
ubuntu.com / usn/USN-2855-2
Third Party Advisory