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CVE-2010-1192
libESMTP, probably 1.0.4 and earlier, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field…
Medium6.8EPSS 1.00%
- Published
- Updated
- Reserved
- Assigned by
- canonical
Description
libESMTP, probably 1.0.4 and earlier, does 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, a related issue to CVE-2009-2408.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 1.00% · top 37% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
Affected products
n/a
- affected n/a
References (4)
- [oss-security] 20100309 Re: CVE Request: libesmtp does not check NULL bytes in commonName (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- ADV-2010-1107 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- SUSE-SR:2010:011 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [oss-security] 20100303 CVE Request: libesmtp does not check NULL bytes in commonName (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)
- 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-2010-1192)Record last updated .