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CVE-2009-3376
Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4, and SeaMonkey before 2.0, does not properly handle a right-to-left override (aka RLO…
High9.3EPSS 3.2%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4, and SeaMonkey before 2.0, does not properly handle a right-to-left override (aka RLO or U+202E) Unicode character in a download filename, which allows remote attackers to spoof file extensions via a crafted filename, as demonstrated by displaying a non-executable extension for an executable file.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 3.2% · top 12% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.3.
Weakness
Affected products
n/a
- affected n/a
References (14)
- RHSA-2010:0153 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- ADV-2010-0648 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- ADV-2010-0650 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 272909 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- https://bugzilla.mozilla.org/show_bug.cgi?id=511521 (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SR:2010:013 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 38977 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2010:0154 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://www.mozilla.org/security/announce/2009/mfsa2009-62.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- oval:org.mitre.oval:def:11218 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- USN-915-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- oval:org.mitre.oval:def:6541 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- ADV-2009-3334 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- MDVSA-2009:294 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_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)
- 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://trackcve.app/cve/CVE-2009-3376)Record last updated .