CVE-2021-3421: Fedoraproject Fedora

Medium severity, CVSS 5.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A flaw was found in the RPM package in the read functionality. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package or compromise an RPM repository, to cause RPM database corruption. The highest threat from this vulnerability is to data integrity. This flaw affects RPM versions before 4.17.0-alpha.

Affected products

• Fedoraproject Fedora: version 32 only; version 33 only; version 34 only
• Red Hat Enterprise Linux: version 8.0 only
• Rpm Rpm: before 4.16.1.3 (fixed in 4.16.1.3)

Published 2021-05-19. Last modified 2026-06-17.