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CVE-2009-2408
Mozilla Network Security Services (NSS) before 3.12.3, Firefox before 3.0.13, Thunderbird before 2.0.0.23, and SeaMonkey before 1.1.18 do…
- 5.9MediumCVSS base score
- 5.7%Exploitation in 30 daysEPSS · top 6.8% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Mozilla Network Security Services (NSS) before 3.12.3, Firefox before 3.0.13, Thunderbird before 2.0.0.23, and SeaMonkey before 1.1.18 do not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority. NOTE: this was originally reported for Firefox before 3.5.
Timeline
ID reserved
By redhat
- 21 days later
· 21 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 | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 5.7% · top 6.8% of all CVEs (11 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Affected products
n/a
- affected n/a
References
References30
- 36139 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 36157 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 1022632 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- MDVSA-2009:197 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- SUSE-SA:2009:048 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- MDVSA-2009:216 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- SUSE-SR:2009:018 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 36434 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 36088 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://isc.sans.org/diary.html?storyid=7003 (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2009:1207 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://www.wired.com/threatlevel/2009/07/kaminsky/ (opens in a new tab)x_refsource_MISCx_transferred
- 36669 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 56723 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- RHSA-2009:1432 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-810-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- oval:org.mitre.oval:def:10751 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- USN-810-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- oval:org.mitre.oval:def:8458 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 1021030 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- http://www.openldap.org/devel/cvsweb.cgi/libraries/libldap/tls_m.c.diff?r1=1.8&r2=1.11&f=h (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-3184 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 36125 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 37098 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.mozilla.org/security/announce/2009/mfsa2009-42.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=510251 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-2085 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- DSA-1874 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- MDVSA-2009:217 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- [oss-security] 20090903 More CVE-2009-2408 like issues (opens in a new tab)mailing-listx_refsource_MLISTx_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-2009-2404 (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-2009-2408)Record last updated .