CVE-2019-20805: Upx

Medium severity, CVSS 5.5. EPSS: 0.8% chance of exploitation in the next 30 days.

p_lx_elf.cpp in UPX before 3.96 has an integer overflow during unpacking via crafted values in a PT_DYNAMIC segment.

Affected products

• Upx Upx: before 3.96 (fixed in 3.96)

Published 2020-06-01. Last modified 2026-06-17.