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CVE-2009-0772

26
FAUCET Score

CVE-2009-0772 is a critical denial-of-service and potential arbitrary code execution vulnerability affecting the layout engine in Mozilla Firefox 2 and 3 (before 3.0.7), Thunderbird (before 2.0.0.21), and SeaMonkey 1.1.15. This flaw, rated with a CVSS score of 9.3, allows remote attackers to trigger memory corruption via crafted events and garbage collection, leading to a crash or arbitrary code execution. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.6CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0:*:*:*:*:*:*:*
1.0.1CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0.1:*:*:*:*:*:*:*
1.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0.2:*:*:*:*:*:*:*
1.0.3CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:1.0.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.72%
Probability of exploitation in next 30 days
EPSS Percentile
88.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0372 is in the 49th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:1.9.0.7-1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 2.1Fixed in: seamonkey-0:1.0.9-0.30.el2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: seamonkey-0:1.0.9-0.34.el3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: thunderbird-0:1.5.0.12-19.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox-0:3.0.7-1.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: seamonkey-0:1.0.9-38.el4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:2.0.0.21-1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:3.0.7-1.el5
View patch
mozillavendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2009-0772Critical

Firefox 2 and 3 - Layout engine crashes

Mar 4, 2009

References

lists.opensuse.org / opensuse-security-announce/2009-03/msg00002.html
lists.opensuse.org / opensuse-security-announce/2009-04/msg00009.html
bugzilla.mozilla.org / show_bug.cgi
secunia.com / advisories/34137
secunia.com / advisories/34140
secunia.com / advisories/34145
secunia.com / advisories/34272
secunia.com / advisories/34324
secunia.com / advisories/34383
secunia.com / advisories/34387
secunia.com / advisories/34417
secunia.com / advisories/34462
secunia.com / advisories/34464
secunia.com / advisories/34527
slackware.com / security/viewer.php
slackware.com / security/viewer.php
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5703
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5945
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6097
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6811
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9609
support.avaya.com / elmodocs2/security/ASA-2009-069.htm
support.avaya.com / japple/css/japple
usn.ubuntu.com / 741-1
redhat.com / archives/fedora-package-announce/2009-March/msg00769.html
redhat.com / archives/fedora-package-announce/2009-March/msg00771.html
redhat.com / archives/fedora-package-announce/2009-March/msg01077.html
debian.org / security/2009/dsa-1751
debian.org / security/2009/dsa-1830
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2009/mfsa2009-07.html
Vendor Advisory
redhat.com / support/errata/RHSA-2009-0258.html
redhat.com / support/errata/RHSA-2009-0315.html
redhat.com / support/errata/RHSA-2009-0325.html
securityfocus.com / bid/33990
securitytracker.com / id
vupen.com / english/advisories/2009/0632