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9.3

Firefox, Thunderbird, SeaMonkey may run malicious code

CVE-2006-1726 · published 20 years ago
Summary

Older versions of Firefox (1.5 before 1.5.0.2), Thunderbird (1.5 before 1.5.0.2) and SeaMonkey (before 1.0.1) can be tricked into executing code from a remote source. An attacker could use specially crafted web content to bypass normal safety checks and run anything they choose on the victim's computer. Upgrade to the latest versions of these browsers or apply the official patches as soon as possible.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
mozilla firefox 1.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.5
1.5.0.1
preview_release
cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*
mozilla seamonkey 1.0
cpe:2.3:a:mozilla:seamonkey:1.0:*:alpha:*:*:*:*:*
mozilla thunderbird 1.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.5
cpe:2.3:a:mozilla:thunderbird:1.0:*:*:*:*:*:*:*
Original advisory text
Unspecified vulnerability in Firefox and Thunderbird 1.5 before 1.5.0.2, and SeaMonkey before 1.0.1, allows remote attackers to bypass the js_ValueToFunctionObject check and execute arbitrary code ...
Unspecified vulnerability in Firefox and Thunderbird 1.5 before 1.5.0.2, and SeaMonkey before 1.0.1, allows remote attackers to bypass the js_ValueToFunctionObject check and execute arbitrary code via unknown vectors involving setTimeout and Firefox' ForEach method.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
9.3 Critical
Exploitation
7% chance of attack within 30 days
Type
CWE-264Permissions, Privileges, and Access Controls
Timeline
Published14 Apr 2006
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2006-1726 · NVD
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