CVE-2009-2477
HIGHEPSS 99th pctlDescription
js/src/jstracer.cpp in the Just-in-time (JIT) JavaScript compiler (aka TraceMonkey) in Mozilla Firefox 3.5 before 3.5.1 allows remote attackers to execute arbitrary code via certain use of the escape function that triggers access to uninitialized memory locations, as originally demonstrated by a document containing P and FONT elements.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 99% of all known CVEs.
References
- http://blog.mozilla.com/security/2009/07/14/critical-javascript-vulnerability-in-firefox-35/
- http://isc.sans.org/diary.html?storyid=6796
- http://secunia.com/advisories/35798
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-266148-1
- http://voices.washingtonpost.com/securityfix/2009/07/stopgap_fix_for_critical_firef.html
- http://www.exploit-db.com/exploits/9137
- http://www.exploit-db.com/exploits/9181
- http://www.h-online.com/security/First-Zero-Day-Exploit-for-Firefox-3-5--/news/113761
- http://www.kb.cert.org/vuls/id/443060
- http://www.mozilla.org/security/announce/2009/mfsa2009-41.html
- http://www.securityfocus.com/bid/35660
- http://www.vupen.com/english/advisories/2009/1868
- https://bugzilla.mozilla.org/show_bug.cgi?id=503286
- https://www.exploit-db.com/exploits/40936/
- https://www.redhat.com/archives/fedora-package-announce/2009-July/msg00909.html
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.