CVE-2009-0652
The Internationalized Domain Names (IDN) blacklist in Mozilla Firefox 3.0.6 and other versions before 3.0.9; Thunderbird before 2.0.0.21;…
- 5.8MediumCVSS base score
- 1.5%Exploitation in 30 daysEPSS · top 26% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The Internationalized Domain Names (IDN) blacklist in Mozilla Firefox 3.0.6 and other versions before 3.0.9; Thunderbird before 2.0.0.21; and SeaMonkey before 1.1.15 does not include box-drawing characters, which allows remote attackers to spoof URLs and conduct phishing attacks, as demonstrated by homoglyphs of the / (slash) and ? (question mark) characters in a subdomain of a .cn domain name, a different vulnerability than CVE-2005-0233. NOTE: some third parties claim that 3.0.6 is not affected, but much older versions perhaps are affected.
Timeline
ID reserved
By mitre
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 | Medium5.8 | AV:N/AC:M/Au:N/C:N/I:P/A:P |
- EPSS (exploitation in 30 days)
- 1.5% · top 26% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Affected products
n/a
- affected n/a
References
23
- MDVSA-2009:111 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- oval:org.mitre.oval:def:11396 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- FEDORA-2009-3875 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- 34894 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2009-1125 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- DSA-1830 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- mozilla-firefox-homoglyph-spoofing(48974) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- [dailydave] 20090219 SSL MITM fun. (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 34096 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 34844 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 35065 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [dailydave] 20090220 SSL MITM fun. (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://www.blackhat.com/presentations/bh-dc-09/Marlinspike/BlackHat-DC-09-Marlinspike-Defeating-SSL.pdf (opens in a new tab)x_refsource_MISCx_transferred
- USN-764-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- SUSE-SR:2009:010 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 33837 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 35042 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 34843 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- DSA-1797 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- RHSA-2009:0437 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2009:0436 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://www.blackhat.com/html/bh-dc-09/bh-dc-09-speakers.html#Marlinspike (opens in a new tab)x_refsource_MISCx_transferred
- http://www.mozilla.org/security/announce/2009/mfsa2009-15.html (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-2009-0655 (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-2009-0652)Record last updated .