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CVE-2009-0771
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…
- 10.0HighCVSS base score
- 4.6%Exploitation in 30 daysEPSS · top 8.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By redhat
- 2 days later
· 2 days later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 4.6% · top 8.3% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
28
- RHSA-2009:0315 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- SUSE-SA:2009:012 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- DSA-1830 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- ADV-2009-0632 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- FEDORA-2009-3101 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- DSA-1751 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- SSA:2009-083-02 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
- oval:org.mitre.oval:def:6755 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=424276%2C435209%2C436965%2C460706%2C466057%2C468578%2C471594%2C472502 (opens in a new tab)x_refsource_CONFIRMx_transferred
- oval:org.mitre.oval:def:6196 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 34140 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.mozilla.org/security/announce/2009/mfsa2009-07.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- MDVSA-2009:083 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- 34464 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 34272 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 34527 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 34145 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:11314 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- SSA:2009-083-03 (opens in a new tab)vendor-advisoryx_refsource_SLACKWAREx_transferred
- 34462 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://support.avaya.com/elmodocs2/security/ASA-2009-069.htm (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1021795 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- MDVSA-2009:075 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- 33990 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 34383 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:5250 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- oval:org.mitre.oval:def:6163 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://support.avaya.com/japple/css/japple?temp.documentID=366362&temp.productID=154235&temp.releaseID=361845&temp.bucketID=126655&PAGE=Document (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-0771 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-0771)Record last updated .