VULNERABILITY INTELLIGENCE

CVE-2023-23456

CVSS score5.3 MEDIUM
EPSS probability0.40%
CISA KEVNot currently listed
Published2023-01-12
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Description

A heap-based buffer overflow issue was discovered in UPX in PackTmt::pack() in p_tmt.cpp file. The flow allows an attacker to cause a denial of service (abort) via a crafted file.

Weakness classification

  • patrick@puiterwijk.org: CWE-787
  • nvd@nist.gov: CWE-787

Primary references