SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2013-1690

Mozilla Firefox and Thunderbird Denial-of-Service Vulnerability

KEVEXPLOIT ✓HIGH 8.8EPSS 69.0%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 18 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

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.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
69.02% probability · 99th percentile
Public exploits
1 in Exploit-DB · verified · first 8 August 2013
CISA KEV
Listed 28 March 2022 · due 18 April 2022
Weakness
CWE-119
Affected
mozilla/firefox · mozilla/thunderbird · mozilla/thunderbird esr · canonical/ubuntu linux · debian/debian linux · redhat/gluster storage server for on-premise · redhat/enterprise linux desktop · redhat/enterprise linux eus · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux workstation · opensuse/opensuse · suse/linux enterprise desktop · suse/linux enterprise server · suse/linux enterprise software development kit
Source
security@mozilla.org
EPSS trend
0%35%70%30 October 2026: 69.02%30 October 202630 October 2026

EPSS 69.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2013-1690

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-27429source ↗Mozilla Firefox - onreadystatechange Event DocumentViewerImpl Use-After-Free (Metasploit)windows · Metasploitremote8 August 2013yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.