cbcvebase.
CVE-2020-27801
published 2022-08-25

CVE-2020-27801: A heap-based buffer over-read was discovered in the get_le64 function in bele.h in UPX 4.0.0 via a crafted Mach-O file.

PriorityP430high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
0.36%
28.2th percentile
A heap-based buffer over-read was discovered in the get_le64 function in bele.h in UPX 4.0.0 via a crafted Mach-O file.

Affected

3 ranges
VendorProductVersion rangeFixed in
debianupx-ucl< upx-ucl 4.2.2-1 (forky)upx-ucl 4.2.2-1 (forky)
upxupx
upxupx

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8LOW
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.