CVE-2013-1676

CVE-2013-1676 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: 2013-05-16
• Last modified: 2026-06-16

Description

The SelectionIterator::GetNextSegment function in Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via unspecified vectors.

Frequently asked questions

What is CVE-2013-1676?

The SelectionIterator::GetNextSegment function in Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via unspecified vectors.

How severe is CVE-2013-1676?

CVE-2013-1676 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2013-1676 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-2013-1676?

CVE-2013-1676 primarily affects Mozilla Firefox. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-1676?

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-2013-1676 published?

CVE-2013-1676 was published on 2013-05-16 and last updated on 2026-06-16.

References

• http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00010.html
• http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00011.html
• http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00012.html
• http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00008.html
• http://rhn.redhat.com/errata/RHSA-2013-0820.html
• http://rhn.redhat.com/errata/RHSA-2013-0821.html
• http://www.debian.org/security/2013/dsa-2699
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:165
• http://www.mozilla.org/security/announce/2013/mfsa2013-48.html
• http://www.securityfocus.com/bid/59863
• http://www.ubuntu.com/usn/USN-1822-1
• http://www.ubuntu.com/usn/USN-1823-1
• https://bugzilla.mozilla.org/show_bug.cgi?id=818454
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16956

Affected products (23)

• cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:19.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:19.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:19.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:20.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:17.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:17.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:17.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:17.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:17.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:firefox:17.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:17.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:17.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:17.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:17.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird:17.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird_esr:17.0:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird_esr:17.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird_esr:17.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird_esr:17.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird_esr:17.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:thunderbird_esr:17.0.5:*:*:*:*:*:*:*

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