CVE-2021-3478: Debian Linux

Medium severity, CVSS 5.5. EPSS: 1% chance of exploitation in the next 30 days.

There's a flaw in OpenEXR's scanline input file functionality in versions before 3.0.0-beta. An attacker able to submit a crafted file to be processed by OpenEXR could consume excessive system memory. The greatest impact of this flaw is to system availability.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only
• Openexr Openexr: before 2.4.3 (fixed in 2.4.3); from 2.5.0, before 2.5.4 (fixed in 2.5.4)

Published 2021-03-31. Last modified 2026-06-17.