CVE-2009-0771
The layout engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1...
10.0 High
The layout engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via certain vectors that trigger memory corruption and assertion failures.
Exploit likelihood
4.61%Down 3.6 points since Feb 4, 2022
What each source reports
NVD Score used
The layout engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via certain vectors that trigger memory corruption and assertion failures.
- Record
CVE-2009-0771- CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
The layout engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via certain vectors that trigger memory corruption and assertion failures.
- Record
CVE-2009-0771- Updated
- 2026-11-02
EUVDEUVD-2009-0771 No score
The layout engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via certain vectors that trigger memory corruption and assertion failures.
- Record
EUVD-2009-0771- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wqhc-6m34-q79w No score
The layout engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1...
The layout engine in Mozilla Firefox before 3.0.7, Thunderbird before 2.0.0.21, and SeaMonkey 1.1.15 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via certain vectors that trigger memory corruption and assertion failures.
- Record
GHSA-wqhc-6m34-q79w- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10071-1 No score
MozillaFirefox-50.1.0-1.1 on GA media
These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10071-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10218-1 No score
seamonkey-2.40-6.1 on GA media
These are all security issues fixed in the seamonkey-2.40-6.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10218-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10230-1 No score
MozillaThunderbird-45.5.1-1.1 on GA media
These are all security issues fixed in the MozillaThunderbird-45.5.1-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10230-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:14572-1 No score
firefox-esr-128.5.1-1.1 on GA media
These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:14572-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
xulrunnerDebian:5.0 From an advisory covering 6 CVEs |
before 1.9.0.7-0lenny1, plus listed versions 1.9.0.5-11.9.0.6-1 |
1.9.0.7-0lenny1 |
icedoveDebian:5.0 From an advisory covering 19 CVEs |
before 2.0.0.22-0lenny1, plus listed versions 2.0.0.19-12.0.0.19-1+kbsd |
2.0.0.22-0lenny1 |
firefoxRed Hat:enterprise_linux:4::as From an advisory covering 8 CVEs |
before 0:3.0.7-1.el4 | 0:3.0.7-1.el4 |
firefox-debuginfoRed Hat:enterprise_linux:4::as From an advisory covering 8 CVEs |
before 0:3.0.7-1.el4 | 0:3.0.7-1.el4 |
firefoxRed Hat:enterprise_linux:4::desktop From an advisory covering 8 CVEs |
before 0:3.0.7-1.el4 | 0:3.0.7-1.el4 |
firefox-debuginfoRed Hat:enterprise_linux:4::desktop From an advisory covering 8 CVEs |
before 0:3.0.7-1.el4 | 0:3.0.7-1.el4 |
firefoxRed Hat:enterprise_linux:4::es From an advisory covering 8 CVEs |
before 0:3.0.7-1.el4 | 0:3.0.7-1.el4 |
firefox-debuginfoRed Hat:enterprise_linux:4::es From an advisory covering 8 CVEs |
before 0:3.0.7-1.el4 | 0:3.0.7-1.el4 |
firefoxRed Hat:enterprise_linux:4::ws From an advisory covering 8 CVEs |
before 0:3.0.7-1.el4 | 0:3.0.7-1.el4 |
firefox-debuginfoRed Hat:enterprise_linux:4::ws From an advisory covering 8 CVEs |
before 0:3.0.7-1.el4 | 0:3.0.7-1.el4 |
Show 17 moreShow less
| Package | Affected | Fixed |
|---|---|---|
xulrunnerRed Hat:enterprise_linux:5::client_workstation From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
xulrunner-debuginfoRed Hat:enterprise_linux:5::client_workstation From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
xulrunner-develRed Hat:enterprise_linux:5::client_workstation From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
xulrunner-devel-unstableRed Hat:enterprise_linux:5::client_workstation From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
firefoxRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:3.0.7-1.el5 | 0:3.0.7-1.el5 |
firefox-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:3.0.7-1.el5 | 0:3.0.7-1.el5 |
xulrunnerRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
xulrunner-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
firefoxRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:3.0.7-1.el5 | 0:3.0.7-1.el5 |
firefox-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:3.0.7-1.el5 | 0:3.0.7-1.el5 |
xulrunnerRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
xulrunner-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
xulrunner-develRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
xulrunner-devel-unstableRed Hat:enterprise_linux:5::server From an advisory covering 8 CVEs |
before 0:1.9.0.7-1.el5 | 0:1.9.0.7-1.el5 |
MozillaFirefoxopenSUSE:Tumbleweed From an advisory covering 899 CVEs |
before 50.1.0-1.1 | 50.1.0-1.1 |
MozillaThunderbirdopenSUSE:Tumbleweed From an advisory covering 560 CVEs |
before 45.5.1-1.1 | 45.5.1-1.1 |
firefox-esropenSUSE:Tumbleweed From an advisory covering 1860 CVEs |
before 128.5.1-1.1 | 128.5.1-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-0771 is a high vulnerability (CVSS 10.0) in Mozilla Firefox, published March 5, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.61%, the 91st percentile. No source names a fixed version.
References
redhat.com/support/errata/RHSA-2009-0315.html
lists.opensuse.org/opensuse-security-announce/2009-03/msg00002.html
debian.org/security/2009/dsa-1830
vupen.com/english/advisories/2009/0632
Show 194 moreShow less
slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.405420
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6755
bugzilla.mozilla.org/buglist.cgi?bug_id=424276%2C435209%2C436965%2C460706%2C466057%2C468578%2C471594%2C472502
secunia.com/advisories/34140
mozilla.org/security/announce/2009/mfsa2009-07.html
mandriva.com/security/advisories?name=MDVSA-2009:083
support.avaya.com/elmodocs2/security/ASA-2009-069.htm
securitytracker.com/id?1021795
securityfocus.com/bid/33990
nvd.nist.gov/vuln/detail/CVE-2009-0771
github.com/advisories/GHSA-wqhc-6m34-q79w
access.redhat.com/errata/RHSA-2009:0315
bugzilla.redhat.com/show_bug.cgi?id=486355
security.access.redhat.com/data/csaf/v2/advisories/2009/rhsa-2009_0315.json
cve.org/CVERecord?id=CVE-2009-0040
suse.com/security/cve/CVE-2008-5913
This page doesn't list everything
Left out here: 1,965 references. The JSON record has them.