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CVE-2009-1571
Use-after-free vulnerability in the HTML parser in Mozilla Firefox 3.0.x before 3.0.18 and 3.5.x before 3.5.8, Thunderbird before 3.0.2,…
- 10.0HighCVSS base score
- 6.5%Exploitation in 30 daysEPSS · top 6.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Use-after-free vulnerability in the HTML parser in Mozilla Firefox 3.0.x before 3.0.18 and 3.5.x before 3.5.8, Thunderbird before 3.0.2, and SeaMonkey before 2.0.3 allows remote attackers to execute arbitrary code via unspecified method calls that attempt to access freed objects in low-memory situations.
Timeline
ID reserved
By flexera
- 10 months later
· 10 months later
Published
- 14 years later
· 14 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)
- 6.5% · top 6.2% of all CVEs (10 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
- USN-895-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- RHSA-2010:0153 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://secunia.com/secunia_research/2009-45/ (opens in a new tab)x_refsource_MISCx_transferred
- 38847 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- SUSE-SA:2010:015 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- RHSA-2010:0113 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- MDVSA-2010:051 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- MDVSA-2010:042 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- http://www.mozilla.org/security/announce/2010/mfsa2010-03.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2010-1936 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- RHSA-2010:0112 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- ADV-2010-0650 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- FEDORA-2010-1932 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- oval:org.mitre.oval:def:11227 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 38770 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- mozilla-htmlparser-code-exec(56361) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- DSA-1999 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- RHSA-2010:0154 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- FEDORA-2010-1727 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 38772 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- USN-896-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- ADV-2010-0405 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 37242 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:8615 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- FEDORA-2010-3230 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=526500 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2010-3267 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 20100218 Secunia Research: Mozilla Firefox Memory Corruption Vulnerability (opens in a new tab)mailing-listx_refsource_BUGTRAQx_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-2009-1567 (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)
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[](https://cveledger.app/cve/CVE-2009-1571)Record last updated .