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Case File

CVE-2011-1926

MEDIUM · CVSS 5.1 EPSS 4.00%

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 5.1. See the original NVD description below for full technical details.

CVE
CVE-2011-1926
Severity
MEDIUM
CVSS
5.1
EPSS
4.00%

Original NVD Description

The STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted 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.