CVE-2021-46179

6.5 mediumEPSS 0.5%

Medium (6.5) in upx upx. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-617
Published: 2023-08-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

upx:upx

References

https://github.com/upx/upx/issues/545
https://github.com/upx/upx/issues/545

Check your stack JSON