CVE-2020-27790
An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service.
Does this matter?
Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own.
Description
A floating point exception issue was discovered in UPX in PackLinuxElf64::invert_pt_dynamic() function of p_lx_elf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service. The highest impact is to Availability.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.33% probability · 26th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-369
- Affected
- upx/upx
- Source
- secalert@redhat.com
EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/upx/upx/commit/eb90eab6325d009004ffb155e3e33f22d4d3ca26Patch, Third Party Advisory
- https://github.com/upx/upx/issues/331Exploit, Issue Tracking, Patch, Third Party Advisory
- https://github.com/upx/upx/commit/eb90eab6325d009004ffb155e3e33f22d4d3ca26Patch, Third Party Advisory
- https://github.com/upx/upx/issues/331Exploit, Issue Tracking, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.