CVE catalog
CVE-2020-27787
DEBIAN-CVE-2020-27787
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.41% · Oct 25, 2026
A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | upx-ucl | 13 | 3.96-1 | fixed |
| Debian | upx-ucl | 14 | 3.96-1 | fixed |
| Ubuntu | upx-ucl | 16.04 | 3.91-1 | vulnerable |
| Ubuntu | upx-ucl | 18.04 | 3.94-2 | vulnerable |
| Ubuntu | upx-ucl | 18.04 | 3.94-3 | vulnerable |
| Ubuntu | upx-ucl | 18.04 | 3.94-4 | vulnerable |
| Ubuntu | upx-ucl | 20.04 | 3.95-2 | vulnerable |
| Ubuntu | upx-ucl | 20.04 | 3.95-2build1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | upx-ucl | deb | 13 | 3.96-1 | Not reported | DEBIAN-CVE-2020-27787 | Not reported |
| Debian | upx-ucl | deb | 14 | 3.96-1 | Not reported | DEBIAN-CVE-2020-27787 | Not reported |
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [upx-ucl]Fixed
Details (2)
4.2.4-1.1· amd64 · trixieFixed · Fixed:
3.96-1pypi · upx-ucl · debian · 13
4.2.4-1.1· arm64 · trixieFixed · Fixed:
3.96-1pypi · upx-ucl · debian · 13
Observed: