Description
A heap-based buffer over-read was discovered in the acc_ua_get_be32 function in miniacc.h in UPX 4.0.0 via a crafted Mach-O file.
References (1)
Core 1
Core References
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/upx/upx/issues/391
Scores
CVSS v3
7.8
EPSS
0.0014
EPSS Percentile
34.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-119
CWE-125
Status
published
Products (1)
upx/upx
4.0.0
Published
Aug 25, 2022
Tracked Since
Feb 18, 2026