CVE-2011-0411

CVE-2011-0411 describes a plaintext command injection vulnerability in the STARTTLS implementation of Postfix versions 2.4.x, 2.5.x, 2.6.x, and 2.7.x. This flaw allows man-in-the-middle attackers to insert commands into encrypted SMTP sessions by exploiting improper I/O buffering. With a CVSS score of 6.8, this vulnerability is of medium severity, requiring medium attack complexity but potentially leading to partial confidentiality, integrity, and availability compromise. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.