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  1. CVEs
  2. CVE-2021-30501
  1. CVEs

CVE-2021-30501

medium
  • Information
  • CPEs
  • Plugins

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.

References

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https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46

https://bugzilla.redhat.com/show_bug.cgi?id=1948696

https://github.com/upx/upx/pull/487

https://github.com/upx/upx/issues/486

Details

Source: Mitre, NVD

Published: 2021-05-27

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.5

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

Severity: Medium

EPSS

EPSS: 0.00125

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