CVE-2015-5252

Name: CVE-2015-5252
Creator: NVD / NIST
Published: 2015-12-29T22:59:01.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 13.27%

Last modified Jun 17, 2026

CVE-2015-5252 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. vfs.c in smbd in Samba 3.x and 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, when share names with certain substring relationships exist, allows remote attackers to bypass intended file-access restrictions via a symlink that points outside of a share.. EPSS estimates a 13.27% chance of exploitation in the next 30 days.

Description

vfs.c in smbd in Samba 3.x and 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, when share names with certain substring relationships exist, allows remote attackers to bypass intended file-access restrictions via a symlink that points outside of a share.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

13.27%

95.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Samba	Samba	>= 3.0.0, < 4.1.22
Samba	Samba	>= 4.2.0, < 4.2.7
Samba	Samba	>= 4.3.0, < 4.3.3
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	15.04
Canonical	Ubuntu Linux	15.10
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00002.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00017.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00046.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.htmlMailing List, Third Party Advisory
http://www.debian.org/security/2016/dsa-3433Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
http://www.securityfocus.com/bid/79733Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1034493Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2855-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2855-2Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1290288Issue Tracking, Third Party Advisory
https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=4278ef25f64d5fdbf432ff1534e275416ec9561e
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993Third Party Advisory
https://security.gentoo.org/glsa/201612-47Third Party Advisory
https://www.samba.org/samba/security/CVE-2015-5252.htmlExploit, Vendor Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174076.htmlThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174391.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00002.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00017.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00046.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.htmlMailing List, Third Party Advisory
http://www.debian.org/security/2016/dsa-3433Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
http://www.securityfocus.com/bid/79733Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1034493Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2855-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2855-2Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1290288Issue Tracking, Third Party Advisory
https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=4278ef25f64d5fdbf432ff1534e275416ec9561e
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993Third Party Advisory
https://security.gentoo.org/glsa/201612-47Third Party Advisory
https://www.samba.org/samba/security/CVE-2015-5252.htmlExploit, Vendor Advisory

Timeline

Published: Dec 29, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-5252?

How severe is CVE-2015-5252?

CVE-2015-5252 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 13.27% probability of exploitation in the next 30 days.

How do I fix CVE-2015-5252?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-5252?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST