CVE-2009-2479
Mozilla Firefox 3.0.x, 3.5, and 3.5.1 on Windows allows remote attackers to cause a denial of service (uncaught exception and application…
- 7.8HighCVSS base score
- 12.1%Exploitation in 30 daysEPSS · top 3.8% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Mozilla Firefox 3.0.x, 3.5, and 3.5.1 on Windows allows remote attackers to cause a denial of service (uncaught exception and application crash) via a long Unicode string argument to the write method. NOTE: this was originally reported as a stack-based buffer overflow. NOTE: on Linux and Mac OS X, a crash resulting from this long string reportedly occurs in an operating-system library, not in Firefox.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- Mozilla Firefox 3.5 - Unicode Remote Buffer Overflow (PoC) (Exploit-DB entry) (opens in a new tab)
EDB-ID 9158dos, windowspublished 15 Jul 2009Verified
References tagged exploit1 reference
- 9158 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 12.1% · top 3.8% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
11
- http://websecurity.com.ua/3338/ (opens in a new tab)x_refsource_MISCx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=504342 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2009-7898 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 9158 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://blog.mozilla.com/security/2009/07/19/milw0rm-9158-stack-overflow-crash-not-exploitable-cve-2009-2479/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20090719 DoS vulnerabilities in Firefox, Internet Explorer, Opera and Chrome (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 1022580 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 35707 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=504343 (opens in a new tab)x_refsource_MISCx_transferred
- 55931 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- firefox-unicode-data-dos(51729) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-2474 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-2479)Record last updated .