CVE-2020-21598: Debian Linux

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

libde265 v1.0.4 contains a heap buffer overflow in the ff_hevc_put_unweighted_pred_8_sse function, which can be exploited via a crafted a file.

Affected products

• Debian Debian Linux: version 10.0 only; version 11.0 only
• Struktur LIBDE265: version 1.0.4 only

Published 2021-09-16. Last modified 2026-06-17.