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CVE-2009-1304

15
FAUCET Score

CVE-2009-1304 describes a denial-of-service vulnerability in the JavaScript engine of Mozilla Firefox 3.x, Thunderbird, and SeaMonkey. Remote attackers can trigger application crashes and potential memory corruption through specially crafted JavaScript involving Math/Date definitions or redeclaration checks. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:N/I:N/A:P), this vulnerability is remotely exploitable with low attack complexity, leading to availability impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0:*:*:*:*:*:*:*
3.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.1:*:*:*:*:*:*:*
3.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.3:*:*:*:*:*:*:*
3.0.4CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:3.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.10%
Probability of exploitation in next 30 days
EPSS Percentile
79.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0210 is in the 69th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.0.9-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.0.9-1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.0.9-1.el5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2009-1304Critical

Firefox 3 JavaScript engine crashes

Apr 21, 2009

References

lists.opensuse.org / opensuse-security-announce/2009-05/msg00000.html
bugzilla.mozilla.org / show_bug.cgi
Exploit
bugzilla.mozilla.org / show_bug.cgi
Exploit
secunia.com / advisories/34758
secunia.com / advisories/34780
secunia.com / advisories/34843
secunia.com / advisories/34894
secunia.com / advisories/35042
secunia.com / advisories/35065
secunia.com / advisories/35602
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5319
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5480
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6015
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7516
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9535
sunsolve.sun.com / search/document.do
usn.ubuntu.com / 764-1
redhat.com / archives/fedora-package-announce/2009-April/msg00683.html
debian.org / security/2009/dsa-1797
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2009/mfsa2009-14.html
Vendor Advisory
redhat.com / support/errata/RHSA-2009-0436.html
securityfocus.com / bid/34656
securitytracker.com / id
slackware.com / security/viewer.php
vupen.com / english/advisories/2009/1125