CVE-2014-3493

CVE-2014-3493 is a low-severity vulnerability in Samba with a CVSS 2.0 base score of 2.7. 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-119.

Key facts

• Severity: Low (CVSS 2.0 base score 2.7)
• EPSS exploit prediction: 7% (94th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Samba
• Published: 2014-06-23
• Last modified: 2026-06-17

Description

The push_ascii function in smbd in Samba 3.6.x before 3.6.24, 4.0.x before 4.0.19, and 4.1.x before 4.1.9 allows remote authenticated users to cause a denial of service (memory corruption and daemon crash) via an attempt to read a Unicode pathname without specifying use of Unicode, leading to a character-set conversion failure that triggers an invalid pointer dereference.

Frequently asked questions

What is CVE-2014-3493?

The push_ascii function in smbd in Samba 3.6.x before 3.6.24, 4.0.x before 4.0.19, and 4.1.x before 4.1.9 allows remote authenticated users to cause a denial of service (memory corruption and daemon crash) via an attempt to read a Unicode pathname without specifying use of Unicode, leading to a character-set conversion failure that triggers an invalid pointer dereference.

How severe is CVE-2014-3493?

CVE-2014-3493 has a CVSS 2.0 base score of 2.7, rated low severity.

Is CVE-2014-3493 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3493?

CVE-2014-3493 primarily affects Samba. In total, 52 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3493?

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

When was CVE-2014-3493 published?

CVE-2014-3493 was published on 2014-06-23 and last updated on 2026-06-17.

References

• http://advisories.mageia.org/MGASA-2014-0279.html
• http://linux.oracle.com/errata/ELSA-2014-0866.html
• http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
• http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html
• http://rhn.redhat.com/errata/RHSA-2014-0866.html
• http://secunia.com/advisories/59378
• http://secunia.com/advisories/59407
• http://secunia.com/advisories/59433
• http://secunia.com/advisories/59579
• http://secunia.com/advisories/59834
• http://secunia.com/advisories/59848
• http://secunia.com/advisories/59919
• http://secunia.com/advisories/61218
• http://security.gentoo.org/glsa/glsa-201502-15.xml
• http://www.mandriva.com/security/advisories?name=MDVSA-2014:136
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:082
• http://www.samba.org/samba/security/CVE-2014-3493
• http://www.securityfocus.com/archive/1/532757/100/0/threaded
• http://www.securityfocus.com/bid/68150
• http://www.securitytracker.com/id/1030455
• https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_samba1
• https://bugzilla.redhat.com/show_bug.cgi?id=1108748
• https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993

Affected products (52)

• cpe:2.3:a:samba:samba:3.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.3:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.4:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.5:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.6:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.7:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.8:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.9:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.10:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.11:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.12:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.13:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.14:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.15:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.16:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.17:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.18:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.19:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.20:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.21:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.22:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.23:*:*:*:*:*:*:*
• 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:4.0.0:*:*:*:*:*:*:*
• 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:*:*:*:*:*:*:*

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