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CVE-2011-1506
The STARTTLS implementation in Kerio Connect 7.1.4 build 2985 and MailServer 6.x does not properly restrict I/O buffering, which allows…
Medium6.8EPSS 2.5%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The STARTTLS implementation in Kerio Connect 7.1.4 build 2985 and MailServer 6.x does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411. NOTE: some of these details are obtained from third party information.
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)
- 2.5% · top 15% of all CVEs (2 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 (6)
- http://www.kb.cert.org/vuls/id/MAPG-8D9M4P (opens in a new tab)x_refsource_CONFIRMx_transferred
- multiple-starttls-command-execution(65932) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- ADV-2011-0610 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 46767 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- VU#555316 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- 43678 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_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)
Record last updated .