Vulnerability record

CVE-2013-1690

Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability

HighExploitation confirmedCISA KEV

What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Firefox and Thunderbird, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Apr 18, 2022.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

Description

Mozilla Firefox before 22.0, Firefox ESR 17.x before 17.0.7, Thunderbird before 17.0.7, and Thunderbird ESR 17.x before 17.0.7 do not properly handle onreadystatechange events in conjunction with page reloading, which allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted web site that triggers an attempt to execute data at an unmapped memory location.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
Product	Vendor	Affected versions	Fixed in	Source
Firefox	Mozilla	< 22.0; >= 17.0, < 17.0.7; < 17.0.7	22.0; 17.0.7	NVD
Firefox and Thunderbird	Mozilla	—	—	KEV

Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

CVSS scoredUpdateKEVSep 30, 2026
CVE-2013-1690 scored CVSS 8.8: Mozilla Firefox and Thunderbird, Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability
CISA lists this as exploited in the wild. Unpatched Firefox and Thunderbird systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2013-1690
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00003.html
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00004.html
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00005.html
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00006.html
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00010.html
lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00011.html
rhn.redhat.com http://rhn.redhat.com/errata/RHSA-2013-0981.html
rhn.redhat.com http://rhn.redhat.com/errata/RHSA-2013-0982.html
debian.org http://www.debian.org/security/2013/dsa-2716
debian.org http://www.debian.org/security/2013/dsa-2720
mozilla.org http://www.mozilla.org/security/announce/2013/mfsa2013-53.html
securityfocus.com http://www.securityfocus.com/bid/60778
ubuntu.com http://www.ubuntu.com/usn/USN-1890-1
ubuntu.com http://www.ubuntu.com/usn/USN-1891-1
bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=857883
bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=901365
oval.cisecurity.org https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16996
cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-1690