CVE-2021-30501
5.5
MEDIUM
CVSS 3.1
EPSS 0.20%
Description
An assertion abort was found in upx MemBuffer::alloc() in mem.cpp, in version UPX 4.0.0. The flow allows attackers to cause a denial of service (abort) via a crafted file.
How to fix CVE-2021-30501
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/upx-ucl—no fix listed
Is CVE-2021-30501 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |