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Fencer Vulns
critical 10.0

CVE-2009-3075 json

Multiple unspecified vulnerabilities in the JavaScript engine in Mozilla Firefox before 3.0.14 and 3.5.x before 3.5.2, Thunderbird before 2…

published 2009-09-10 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3059

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.3%
EPSS 5.3% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Multiple unspecified vulnerabilities in the JavaScript engine in Mozilla Firefox before 3.0.14 and 3.5.x before 3.5.2, Thunderbird before 2.0.0.24, and SeaMonkey before 1.1.19 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to use of mutable strings in the js_StringReplaceHelper function in js/src/jsstr.cpp, and unknown vectors.

Patch / fix

  • thunderbird RHEL 4 1.5.0.12-25.el4
  • thunderbird RHEL 5 PRODUCTIVITY, RHEL 5 2.0.0.24-2.el5_4
  • seamonkey RHEL 3 1.0.9-0.45.el3
  • seamonkey-nss RHEL 3 1.0.9-0.45.el3
  • seamonkey-chat RHEL 3 1.0.9-0.45.el3
  • seamonkey-mail RHEL 3 1.0.9-0.45.el3
  • seamonkey-nspr RHEL 3 1.0.9-0.45.el3
  • seamonkey-js-debugger RHEL 3 1.0.9-0.45.el3

red hat advisories RHSA-2010:0154RHSA-2010:0153RHSA-2009:1432RHSA-2009:1431RHSA-2009:1430

  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1

opensuse advisories openSUSE-SU-2024:10071-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-3075 updated cvss 6.8

Firefox 3.5.2 3.0.14 JavaScript engine crashes

  • Red Hat Desktop version 3 seamonkey 1.0.9-0.45.el3, seamonkey-nss 1.0.9-0.45.el3, seamonkey-chat 1.0.9-0.45.el3, seamonkey-mail 1.0.9-0.45.el3, seamonkey-nspr 1.0.9-0.45.el3, seamonkey-js-debugger 1.0.9-0.45.el3, +1 more
    fixed: vendor fix RHSA-2009:1432
  • Red Hat Enterprise Linux (v. 5 server) nspr 4.7.5-1.el5_4, firefox 3.0.14-1.el5_4, xulrunner 1.9.0.14-1.el5_4, xulrunner-devel-unstable 1.9.0.14-1.el5_4
    fixed: vendor fix RHSA-2009:1430
  • Red Hat Enterprise Linux AS version 3 seamonkey 1.0.9-0.45.el3, seamonkey-nss 1.0.9-0.45.el3, seamonkey-chat 1.0.9-0.45.el3, seamonkey-mail 1.0.9-0.45.el3, seamonkey-nspr 1.0.9-0.45.el3, seamonkey-js-debugger 1.0.9-0.45.el3, +1 more
    fixed: vendor fix RHSA-2009:1432
  • Red Hat Enterprise Linux AS version 4 nspr 4.7.5-1.el4_8, firefox 3.0.14-1.el4, seamonkey 1.0.9-48.el4_8, thunderbird 1.5.0.12-25.el4, seamonkey-chat 1.0.9-48.el4_8, seamonkey-mail 1.0.9-48.el4_8, +2 more Red Hat Enterprise Linux Desktop (v. 5 client) nspr 4.7.5-1.el5_4, firefox 3.0.14-1.el5_4, xulrunner 1.9.0.14-1.el5_4, thunderbird 2.0.0.24-2.el5_4, xulrunner-devel-unstable 1.9.0.14-1.el5_4 Red Hat Enterprise Linux Desktop version 4 nspr 4.7.5-1.el4_8, firefox 3.0.14-1.el4, seamonkey 1.0.9-48.el4_8, thunderbird 1.5.0.12-25.el4, seamonkey-chat 1.0.9-48.el4_8, seamonkey-mail 1.0.9-48.el4_8, +2 more Red Hat Enterprise Linux Desktop Workstation (v. 5 client) nspr 4.7.5-1.el5_4, xulrunner 1.9.0.14-1.el5_4, xulrunner-devel-unstable 1.9.0.14-1.el5_4
    fixed: vendor fix RHSA-2009:1430
  • Red Hat Enterprise Linux ES version 3 seamonkey 1.0.9-0.45.el3, seamonkey-nss 1.0.9-0.45.el3, seamonkey-chat 1.0.9-0.45.el3, seamonkey-mail 1.0.9-0.45.el3, seamonkey-nspr 1.0.9-0.45.el3, seamonkey-js-debugger 1.0.9-0.45.el3, +1 more
    fixed: vendor fix RHSA-2009:1432
  • Red Hat Enterprise Linux ES version 4 nspr 4.7.5-1.el4_8, firefox 3.0.14-1.el4, seamonkey 1.0.9-48.el4_8, thunderbird 1.5.0.12-25.el4, seamonkey-chat 1.0.9-48.el4_8, seamonkey-mail 1.0.9-48.el4_8, +2 more
    fixed: vendor fix RHSA-2009:1430
  • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird 2.0.0.24-2.el5_4
    fixed: vendor fix RHSA-2010:0153
  • Red Hat Enterprise Linux WS version 3 seamonkey 1.0.9-0.45.el3, seamonkey-nss 1.0.9-0.45.el3, seamonkey-chat 1.0.9-0.45.el3, seamonkey-mail 1.0.9-0.45.el3, seamonkey-nspr 1.0.9-0.45.el3, seamonkey-js-debugger 1.0.9-0.45.el3, +1 more
    fixed: vendor fix RHSA-2009:1432
show 1 more
  • Red Hat Enterprise Linux WS version 4 nspr 4.7.5-1.el4_8, firefox 3.0.14-1.el4, seamonkey 1.0.9-48.el4_8, thunderbird 1.5.0.12-25.el4, seamonkey-chat 1.0.9-48.el4_8, seamonkey-mail 1.0.9-48.el4_8, +2 more
    fixed: vendor fix RHSA-2009:1430

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

5.27% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.