CVE-2004-0777 · cross-distro fix matrix

CVE-2004-0777: Format string vulnerability in the auth_debug function in Courier-IMAP 1.6.0 through 2.2.1 and 3.x through 3.0.3, when login debugging (DEBUG_LOGIN) is enabled, allows remote attackers to execute arbitrary code.

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

Elevated exploitation risk

FIRST EPSS puts CVE-2004-0777's probability of exploitation in the next 30 days at 11% (95th percentile of all CVEs)— well above the noise floor. Prioritize it.

EPSS:11% · 30-day exploit probability95th percentile

Fix per ecosystem

Each block below is a distro release where CVE-2004-0777 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

courier→ fixed in0.45.6-1urgency: medium

sudo apt-get install --only-upgrade -y courier

Debian bookworm

Source: Debian Security Tracker

courier→ fixed in0.45.6-1urgency: medium

sudo apt-get install --only-upgrade -y courier

Debian trixie

Source: Debian Security Tracker

courier→ fixed in0.45.6-1urgency: medium

sudo apt-get install --only-upgrade -y courier

Are YOU affected by CVE-2004-0777?

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

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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