CVE-2011-1430

The STARTTLS implementation in the server in Ipswitch IMail 11.03 and earlier 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.

Published: 2011-03-16 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1430 is rated Moderate Risk (59.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 3.21%). EPSS rose +2.16% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-1430

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.05% 3.21% +2.16%
2 2026-01-30 0.42% 1.05% +0.63%
3 2025-03-30 — 0.42% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1430

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2011-1430

Affected software / configurations for CVE-2011-1430

Vendor Product Version Raw CPE
ipswitch imail — cpe:2.3:a:ipswitch:imail:*:*:*:*:*:*:*:*
ipswitch imail <= 11.03 cpe:2.3:a:ipswitch:imail:*:*:*:*:*:*:*:*
ipswitch imail 5.0 cpe:2.3:a:ipswitch:imail:5.0:*:*:*:*:*:*:*
ipswitch imail 5.0.5 cpe:2.3:a:ipswitch:imail:5.0.5:*:*:*:*:*:*:*
ipswitch imail 5.0.6 cpe:2.3:a:ipswitch:imail:5.0.6:*:*:*:*:*:*:*
ipswitch imail 5.0.7 cpe:2.3:a:ipswitch:imail:5.0.7:*:*:*:*:*:*:*
ipswitch imail 5.0.8 cpe:2.3:a:ipswitch:imail:5.0.8:*:*:*:*:*:*:*
ipswitch imail 6.00 cpe:2.3:a:ipswitch:imail:6.00:*:*:*:*:*:*:*
ipswitch imail 6.0 cpe:2.3:a:ipswitch:imail:6.0:*:*:*:*:*:*:*
ipswitch imail 6.0.1 cpe:2.3:a:ipswitch:imail:6.0.1:*:*:*:*:*:*:*
ipswitch imail 6.0.2 cpe:2.3:a:ipswitch:imail:6.0.2:*:*:*:*:*:*:*
ipswitch imail 6.0.3 cpe:2.3:a:ipswitch:imail:6.0.3:*:*:*:*:*:*:*
ipswitch imail 6.0.4 cpe:2.3:a:ipswitch:imail:6.0.4:*:*:*:*:*:*:*
ipswitch imail 6.0.5 cpe:2.3:a:ipswitch:imail:6.0.5:*:*:*:*:*:*:*
ipswitch imail 6.0.6 cpe:2.3:a:ipswitch:imail:6.0.6:*:*:*:*:*:*:*
ipswitch imail 6.1 cpe:2.3:a:ipswitch:imail:6.1:*:*:*:*:*:*:*
ipswitch imail 6.2 cpe:2.3:a:ipswitch:imail:6.2:*:*:*:*:*:*:*
ipswitch imail 6.3 cpe:2.3:a:ipswitch:imail:6.3:*:*:*:*:*:*:*
ipswitch imail 6.4 cpe:2.3:a:ipswitch:imail:6.4:*:*:*:*:*:*:*
ipswitch imail 6.06 cpe:2.3:a:ipswitch:imail:6.06:*:*:*:*:*:*:*
ipswitch imail 7.0.1 cpe:2.3:a:ipswitch:imail:7.0.1:*:*:*:*:*:*:*
ipswitch imail 7.0.2 cpe:2.3:a:ipswitch:imail:7.0.2:*:*:*:*:*:*:*
ipswitch imail 7.0.3 cpe:2.3:a:ipswitch:imail:7.0.3:*:*:*:*:*:*:*
ipswitch imail 7.0.4 cpe:2.3:a:ipswitch:imail:7.0.4:*:*:*:*:*:*:*
ipswitch imail 7.0.5 cpe:2.3:a:ipswitch:imail:7.0.5:*:*:*:*:*:*:*
ipswitch imail 7.0.6 cpe:2.3:a:ipswitch:imail:7.0.6:*:*:*:*:*:*:*
ipswitch imail 7.0.7 cpe:2.3:a:ipswitch:imail:7.0.7:*:*:*:*:*:*:*
ipswitch imail 7.1 cpe:2.3:a:ipswitch:imail:7.1:*:*:*:*:*:*:*
ipswitch imail 7.12 cpe:2.3:a:ipswitch:imail:7.12:*:*:*:*:*:*:*
ipswitch imail 8.0.3 cpe:2.3:a:ipswitch:imail:8.0.3:*:*:*:*:*:*:*
ipswitch imail 8.0.5 cpe:2.3:a:ipswitch:imail:8.0.5:*:*:*:*:*:*:*
ipswitch imail 8.1 cpe:2.3:a:ipswitch:imail:8.1:*:*:*:*:*:*:*
ipswitch imail 8.01 cpe:2.3:a:ipswitch:imail:8.01:*:*:*:*:*:*:*
ipswitch imail 8.11 cpe:2.3:a:ipswitch:imail:8.11:*:*:*:*:*:*:*
ipswitch imail 8.12 cpe:2.3:a:ipswitch:imail:8.12:*:*:*:*:*:*:*
ipswitch imail 8.13 cpe:2.3:a:ipswitch:imail:8.13:*:*:*:*:*:*:*
ipswitch imail 8.22 cpe:2.3:a:ipswitch:imail:8.22:*:*:*:*:*:*:*
ipswitch imail 10 cpe:2.3:a:ipswitch:imail:10:*:*:*:*:*:*:*
ipswitch imail 10.01 cpe:2.3:a:ipswitch:imail:10.01:*:*:*:*:*:*:*
ipswitch imail 10.02 cpe:2.3:a:ipswitch:imail:10.02:*:*:*:*:*:*:*
ipswitch imail 11 cpe:2.3:a:ipswitch:imail:11:*:*:*:*:*:*:*
ipswitch imail 11.01 cpe:2.3:a:ipswitch:imail:11.01:*:*:*:*:*:*:*
ipswitch imail 11.02 cpe:2.3:a:ipswitch:imail:11.02:*:*:*:*:*:*:*
ipswitch imail 2006 cpe:2.3:a:ipswitch:imail:2006:*:*:*:*:*:*:*
ipswitch imail 2006.1 cpe:2.3:a:ipswitch:imail:2006.1:*:*:*:*:*:*:*
ipswitch imail 2006.2 cpe:2.3:a:ipswitch:imail:2006.2:*:*:*:*:*:*:*
ipswitch imail server_8.2_hotfix_2 cpe:2.3:a:ipswitch:imail:server_8.2_hotfix_2:*:*:*:*:*:*:*

References for CVE-2011-1430

cvelogic Threat Intelligence