CVE-2021-3899: Canonical Apport

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

There is a race condition in the 'replaced executable' detection that, with the correct local configuration, allow an attacker to execute arbitrary code as root.

Affected products

• Canonical Apport: before 2.21.0 (fixed in 2.21.0)
• Canonical Ubuntu Linux: version 18.04 only; version 20.04 only; version 21.10 only; version 22.04 only

Published 2024-06-03. Last modified 2026-06-17.