The js_dtoa function in Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9…
Priority LOW 27CWE-835Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-835.
Summary
The js_dtoa function in Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7 overwrites memory instead of exiting when the floating point precision is reduced, which allows remote attackers to cause a denial of service via any plugins that reduce the precision.
Why it matters now
EPSS 0.03939 90th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | 1.5 to before 1.5.0.9; 2.0 to before 2.0.0.1 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:* | before 1.0.7 | Vulnerable | Mozilla |
| cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | before 1.5.0.9 | Vulnerable | Mozilla |
| cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:* | 3.1 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:* | 5.10 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:* | 6.06 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:* | 6.10 | Vulnerable | Canonical |
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions 1.5 to before 1.5.0.9; 2.0 to before 2.0.0.1 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:* Versions before 1.0.7 Vulnerable ·Mozilla
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* Versions before 1.5.0.9 Vulnerable ·Mozilla
- cpe:2.3:o:debian:debian_linux:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:5.10:*:*:*:*:*:*:* Versions 5.10 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:* Versions 6.06 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:* Versions 6.10 Vulnerable ·Canonical
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-6499
- 2026-10-03 Alias added: GHSA-636h-f5g9-p45x
References
Sources
- CVE-2006-6499 · CVE Program
- CVE-2006-6499 · NVD
- FIRST EPSS
- GHSA-636h-f5g9-p45x · GitHub Advisory Database · CC BY 4.0
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