CVE-2014-1553

CVE-2014-1553 is a critical-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 10.0. 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: Critical (CVSS 2.0 base score 10.0)
• EPSS exploit prediction: 6% (92nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Mozilla Firefox
• Published: 2014-09-03
• Last modified: 2026-06-17

Description

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 32.0, Firefox ESR 31.x before 31.1, and Thunderbird 31.x before 31.1 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Frequently asked questions

What is CVE-2014-1553?

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 32.0, Firefox ESR 31.x before 31.1, and Thunderbird 31.x before 31.1 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

How severe is CVE-2014-1553?

CVE-2014-1553 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2014-1553 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-1553?

CVE-2014-1553 primarily affects Mozilla Firefox. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-1553?

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

When was CVE-2014-1553 published?

CVE-2014-1553 was published on 2014-09-03 and last updated on 2026-06-17.

References

• http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00024.html
• http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
• http://lists.opensuse.org/opensuse-updates/2014-09/msg00011.html
• http://secunia.com/advisories/60148
• http://secunia.com/advisories/61114
• http://www.mozilla.org/security/announce/2014/mfsa2014-67.html
• http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
• http://www.securityfocus.com/bid/69524
• http://www.securitytracker.com/id/1030793
• http://www.securitytracker.com/id/1030794
• https://bugzilla.mozilla.org/show_bug.cgi?id=1022945
• https://bugzilla.mozilla.org/show_bug.cgi?id=1027359
• https://bugzilla.mozilla.org/show_bug.cgi?id=1033121
• https://bugzilla.mozilla.org/show_bug.cgi?id=1035007
• https://bugzilla.mozilla.org/show_bug.cgi?id=1037666
• https://bugzilla.mozilla.org/show_bug.cgi?id=1041148
• https://bugzilla.mozilla.org/show_bug.cgi?id=995075
• https://security.gentoo.org/glsa/201504-01

Affected products (7)

• cpe:2.3:o:opensuse:evergreen:11.4:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:30.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:31.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:31.0:*:*:*:*:*:*:*

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