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Case File

CVE-2011-2165

MEDIUM · CVSS 6.8 EPSS 5.16%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2011-05-23 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.8. See the original NVD description below for full technical details.

CVE
CVE-2011-2165
Severity
MEDIUM
CVSS
6.8
EPSS
5.16%

Original NVD Description

The STARTTLS implementation in WatchGuard XCS 9.0 and 9.1 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.