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CVE-2011-1575 · cross-distro fix matrix

CVE-2011-1575: The STARTTLS implementation in ftp_parser.c in Pure-FTPd before 1.0.30 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted FTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext com

Affects 3 Linux releases across 3 (distro × package) combinations.

Elevated exploitation risk

FIRST EPSS puts CVE-2011-1575's probability of exploitation in the next 30 days at 33% (98th percentile of all CVEs)— well above the noise floor. Prioritize it.

EPSS:33% · 30-day exploit probability98th percentile

Fix per ecosystem

Each block below is a distro release where CVE-2011-1575 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • pure-ftpd→ fixed in1.0.30-1urgency: low
    sudo apt-get install --only-upgrade -y pure-ftpd

Debian bookworm

Source: Debian Security Tracker

  • pure-ftpd→ fixed in1.0.30-1urgency: low
    sudo apt-get install --only-upgrade -y pure-ftpd

Debian trixie

Source: Debian Security Tracker

  • pure-ftpd→ fixed in1.0.30-1urgency: low
    sudo apt-get install --only-upgrade -y pure-ftpd
Are YOU affected by CVE-2011-1575?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash
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