CVE-2021-28021: Debian Linux

High severity, CVSS 7.8. EPSS: 1.4% chance of exploitation in the next 30 days.

Buffer overflow vulnerability in function stbi__extend_receive in stb_image.h in stb 2.26 via a crafted JPEG file.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 34 only; version 35 only
• Stb Project Stb: version 2.26 only

Published 2021-10-15. Last modified 2026-06-17.