CVE-2021-20285

MediumCVSS 6.6/10Last modified Jun 17, 2026

Description

A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.

Metrics

CVSS 3.1 6.6/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Weakness enumeration

CWE-119 CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Mar 26, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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