CVE-2014-1558

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2014-07-23 · updated 2026-06-17

Description

Mozilla Firefox before 31.0 and Thunderbird before 31.0 allow remote attackers to cause a denial of service (X.509 certificate parsing outage) via a crafted certificate that does not use UTF-8 character encoding in a required context, a different vulnerability than CVE-2014-1559.

Affected products

Mozilla Firefox: through 30.0
Mozilla Thunderbird: through 24.7; 24.0, 24.0.1, 24.1, 24.1.1, 24.2, 24.3 (+3)

References

http://secunia.com/advisories/60628
http://www.mozilla.org/security/announce/2014/mfsa2014-65.html
http://www.securitytracker.com/id/1030619
http://www.securitytracker.com/id/1030620
https://bugzilla.mozilla.org/show_bug.cgi?id=1015973
https://security.gentoo.org/glsa/201504-01
http://secunia.com/advisories/60628
http://www.mozilla.org/security/announce/2014/mfsa2014-65.html
http://www.securitytracker.com/id/1030619
http://www.securitytracker.com/id/1030620
https://bugzilla.mozilla.org/show_bug.cgi?id=1015973
https://security.gentoo.org/glsa/201504-01

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