CVE-2015-5330

CVE-2015-5330 is a high-severity vulnerability in Samba with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• CVSS v2: 5.0
• EPSS exploit prediction: 6% (93rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-200
• Affected product: Samba
• Published: 2015-12-29
• Last modified: 2026-06-17

Description

ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, mishandles string lengths, which allows remote attackers to obtain sensitive information from daemon heap memory by sending crafted packets and then reading (1) an error message or (2) a database value.

Frequently asked questions

What is CVE-2015-5330?

ldb before 1.1.24, as used in the AD LDAP server in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3, mishandles string lengths, which allows remote attackers to obtain sensitive information from daemon heap memory by sending crafted packets and then reading (1) an error message or (2) a database value.

How severe is CVE-2015-5330?

CVE-2015-5330 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2015-5330 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5330?

CVE-2015-5330 primarily affects Samba. In total, 57 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-5330?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-5330 published?

CVE-2015-5330 was published on 2015-12-29 and last updated on 2026-06-17.

References

• http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.html
• http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.html
• http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.html
• http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00033.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00002.html
• http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00017.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-3433
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
• http://www.securityfocus.com/bid/79734
• http://www.securitytracker.com/id/1034493
• http://www.ubuntu.com/usn/USN-2855-1
• http://www.ubuntu.com/usn/USN-2855-2
• http://www.ubuntu.com/usn/USN-2856-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1281326
• https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=0454b95657846fcecf0f51b6f1194faac02518bd
• https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=538d305de91e34a2938f5f219f18bf0e1918763f
• https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=7f51ec8c4ed9ba1f53d722e44fb6fb3cde933b72
• https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=a118d4220ed85749c07fb43c1229d9e2fecbea6b
• https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=ba5dbda6d0174a59d221c45cca52ecd232820d48
• https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=f36cb71c330a52106e36028b3029d952257baf15
• https://security.gentoo.org/glsa/201612-47
• https://www.samba.org/samba/security/CVE-2015-5330.html

Affected products (57)

• cpe:2.3:a:samba:samba:4.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.11:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.12:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.13:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.14:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.15:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.16:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.17:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.18:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.19:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.20:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.21:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.22:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.23:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.0.24:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.6:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.7:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.9:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.10:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.11:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.12:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.13:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:4.1.14:*:*:*:*:*:*:*

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