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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

CVE-2013-1690 — Red Hat

HIGH

CVE-2013-1690 is a high-severity (CVSS 8.8) Buffer Overflow vulnerability. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-03-28) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

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…

Published
Updated
Affected
15 products
Patched
See advisory
Exploits
5 known
Exploitation data as of Oct 21, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-03-28. Federal agencies were required to remediate by 2022-04-18.
  • A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2013-1690.

EPSS Exploitation Probability

via FIRST.org ↗
69.0%probability of exploitation in next 30 days
High Risk0.00%
Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk
40.5%52.2%63.9%75.6%47.1%69.0%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2013-1690 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the 50–90% band (highlighted). Counts from FIRST.org, log-scaled.

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.

Affected Products

15 products · 34 configurations
OS
ubuntu linuxcanonical
3 versions
12.0412.1013.04
OS
debian linuxdebian
1 version
7.0
Application
firefoxmozilla
≥ 17.0 && < 17.0.7
range
Application
thunderbirdmozilla
< 17.0.7
range
Application
thunderbird esrmozilla
≥ 17.0 && < 17.0.7
range
OS
opensuseopensuse
3 versions
11.412.212.3
Exploits & PoCs
5

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-27429remotewindows✓ Verified

Mozilla Firefox - onreadystatechange Event DocumentViewerImpl Use-After-Free (Metasploit)

by Metasploit · Aug 8, 2013

Detection & mitigation playbook

Vulnerability
  1. Detect

    Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

  2. Remediation status

    No fixed release is recorded for CVE-2013-1690 yet. Track the upstream advisory, and apply the exposure-reduction steps below in the meantime.

  3. Mitigate without a patch

    Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatCritical
ProductFixed inAdvisory
Red Hat Enterprise Linux 5thunderbird-0:17.0.7-1.el5_9RHSA-2013:0982
Red Hat Enterprise Linux 5firefox-0:17.0.7-1.el5_9RHSA-2013:0981

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

Is CVE-2013-1690 in your dependencies?

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CVE-2013-1690: Red Hat Memory Corruption (KEV)