CVE-2021-30501

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

An assertion abort was found in upx MemBuffer::alloc() in mem.cpp, in version UPX 4.0.0. The flow allows attackers to cause a denial of service (abort) via a crafted file.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20CWE-617

Affected software

VendorProductVersions
n/aupxupx 4.0

References

Timeline

Published
May 27, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-30501: Medium severity, CVSS 5.5 | Vulnix