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Doomsday 9.9 RCE bug could hit every Linux system

ID: f6d0a770-e7bc-5721-b286-804d92f505d3

STIX ID: report--f6d0a770-e7bc-5721-b286-804d92f505d3

Feed Name: The Register (Security)

Threat Score
70/100

Date Published: 2024-09-26

Date Updated: 2026-04-26

Author: Jessica Lyons

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A public disclosure detailed a chained remote-code-execution vulnerability affecting the CUPS printing stack (cups-browsed, libcupsfilters, libppd, cups-filters) whereby an attacker reachable on UDP port 631 or via spoofed zeroconf/mDNS/DNS‑SD can cause a target to fetch malicious IPP data and ultimately execute arbitrary commands when the user initiates a print job; multiple CVEs were enumerated and vendors and mitigations (remove/disable cups-browsed, block UDP/631, install updates) were advised.

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