CVE-2015-7560

CVE-2015-7560 is a medium-severity vulnerability in Samba with a CVSS 3.x base score of 6.5. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-284.

Key facts

• Severity: Medium (CVSS 3.x base score 6.5)
• CVSS v2: 4.0
• EPSS exploit prediction: 13% (96th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-284
• Affected product: Samba
• Published: 2016-03-13
• Last modified: 2026-06-17

Description

The SMB1 implementation in smbd in Samba 3.x and 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4 allows remote authenticated users to modify arbitrary ACLs by using a UNIX SMB1 call to create a symlink, and then using a non-UNIX SMB1 call to write to the ACL content.

Frequently asked questions

What is CVE-2015-7560?

The SMB1 implementation in smbd in Samba 3.x and 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4 allows remote authenticated users to modify arbitrary ACLs by using a UNIX SMB1 call to create a symlink, and then using a non-UNIX SMB1 call to write to the ACL content.

How severe is CVE-2015-7560?

CVE-2015-7560 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2015-7560 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7560?

CVE-2015-7560 primarily affects Samba. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-7560?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-7560 published?

CVE-2015-7560 was published on 2016-03-13 and last updated on 2026-06-17.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178730.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178764.html
• http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180000.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00063.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00064.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00065.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00081.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00090.html
• http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00092.html
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
• http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
• http://www.debian.org/security/2016/dsa-3514
• http://www.securityfocus.com/bid/84267
• http://www.securitytracker.com/id/1035220
• http://www.ubuntu.com/usn/USN-2922-1
• https://bugzilla.samba.org/show_bug.cgi?id=11648
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05121842
• https://www.samba.org/samba/security/CVE-2015-7560.html

Affected products (9)

• cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.4.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.4.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.4.0:rc3:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

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• CVE-2015-0240 — Critical (CVSS 10.0): The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before…
• CVE-2012-1182 — Critical (CVSS 10.0): The RPC code generator in Samba 3.x before 3.4.16, 3.5.x before 3.5.14, and 3.6.x before 3.6.4 does not implement…
• CVE-2007-2446 — Critical (CVSS 10.0): Multiple heap-based buffer overflows in the NDR parsing in smbd in Samba 3.0.0 through 3.0.25rc3 allow remote attackers…
• CVE-2004-0882 — Critical (CVSS 10.0): Buffer overflow in the QFILEPATHINFO request handler in Samba 3.0.x through 3.0.7 may allow remote attackers to execute…
• CVE-2004-1154 — Critical (CVSS 10.0): Integer overflow in the Samba daemon (smbd) in Samba 2.x and 3.0.x through 3.0.9 allows remote authenticated users to…
• CVE-2004-0600 — Critical (CVSS 10.0): Buffer overflow in the Samba Web Administration Tool (SWAT) in Samba 3.0.2 to 3.0.4 allows remote attackers to execute…

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