How severe is CVE-2014-5355?

CVE-2014-5355 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2014-5355 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-5355?

CVE-2014-5355 primarily affects Mit Kerberos 5. In total, 60 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-5355?

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

When was CVE-2014-5355 published?

CVE-2014-5355 was published on 2015-02-20 and last updated on 2026-06-17.

CVE-2014-5355

CVE-2014-5355 is a medium-severity vulnerability in Mit Kerberos 5 with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mit Kerberos 5
Published: 2015-02-20
Last modified: 2026-06-17

Description

MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c.

Frequently asked questions

What is CVE-2014-5355?: MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c.
How severe is CVE-2014-5355?: CVE-2014-5355 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2014-5355 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-5355?: CVE-2014-5355 primarily affects Mit Kerberos 5. In total, 60 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-5355?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-5355 published?: CVE-2014-5355 was published on 2015-02-20 and last updated on 2026-06-17.

References

Affected products (60)

cpe:2.3:a:mit:kerberos_5:1.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2.7:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.2.8:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.3:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.3:alpha1:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.3.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.3.3:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.3.4:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.3.5:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.3.6:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.4:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.4.3:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.4.4:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.5:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.6:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.6.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.6.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.7:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.7.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.5:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.6:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:*

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