The layout engine in Mozilla Firefox 2 and 3 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 vectors related to gczeal, a different vulnerability than CVE-2009-0773.
CVE-2009-0774
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 4%CVSS: —Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 89.4%
- KEV
- Not listed
Published
March 5, 2009
Last Modified
April 23, 2026
References (76)
- secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2009-03/msg00002.html
- secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2009-04/msg00009.html
- secalert@redhathttp://secunia.com/advisories/34137
- secalert@redhathttp://secunia.com/advisories/34140
- secalert@redhathttp://secunia.com/advisories/34145
- secalert@redhathttp://secunia.com/advisories/34272
- secalert@redhathttp://secunia.com/advisories/34324
- secalert@redhathttp://secunia.com/advisories/34383
- secalert@redhathttp://secunia.com/advisories/34387
- secalert@redhathttp://secunia.com/advisories/34417
- secalert@redhathttp://secunia.com/advisories/34462
- secalert@redhathttp://secunia.com/advisories/34464
- secalert@redhathttp://secunia.com/advisories/34527
- secalert@redhathttp://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.405420
- secalert@redhathttp://slackware.com/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.433952
Patch Availability(7)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | firefox (1.5.dfsg+1.5.0.15~prepatch080614k-0ubuntu1) @ dapper | 2026-05-30 | ubuntu |
| ubuntu | thunderbird (2.0.0.21+nobinonly-0ubuntu0.8.10.1) @ intrepid | 2026-05-30 | ubuntu |
| ubuntu | firefox (2.0.0.21~tb.21+nobinonly-0ubuntu0.7.10.1) @ gutsy | 2026-05-30 | ubuntu |
| ubuntu | xulrunner-1.9 (1.9.0.7+nobinonly-0ubuntu0.8.04.1) @ hardy | 2026-05-30 | ubuntu |
| redhat | thunderbird-0:2.0.0.21-1.el5 | 2009-03-24 | redhat |
| redhat | xulrunner-0:1.9.0.7-1.el5 | 2009-03-05 | redhat |
| redhat | seamonkey-0:1.0.9-38.el4 | 2009-03-05 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Frequently asked(4)
What is CVE-2009-0774?
CVE-2009-0774 is a none vulnerability published on March 5, 2009. The layout engine in Mozilla Firefox 2 and 3 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 vectors related to gczeal, a different vulnerability than CVE-2009-0773.
When was CVE-2009-0774 disclosed?
CVE-2009-0774 was first published in the National Vulnerability Database on March 5, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-0774 actively exploited?
CVE-2009-0774 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-0774?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-0774, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
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