CVE-2021-46179: Reachable Assertion vulnerability in upx before 4.0.0 allows attackers to cause a denial of service via crafted file passed to the the readx function.

PriorityP422medium6.5CVSS 3.1

AVNACLPRNUIRSUCNINAH

EPSS

0.45%

36.2th percentile

Reachable Assertion vulnerability in upx before 4.0.0 allows attackers to cause a denial of service via crafted file passed to the the readx function.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
debian	upx-ucl	< upx-ucl 4.2.2-1 (forky)	upx-ucl 4.2.2-1 (forky)
upx	upx	< 4.0.0	4.0.0

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

osv6.5MEDIUM

vendor_debian6.5LOW

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.