CVE-2019-20805

Name: CVE-2019-20805
Creator: NVD / NIST
Published: 2020-06-01T14:15:09.977+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2019-20805 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. p_lx_elf.cpp in UPX before 3.96 has an integer overflow during unpacking via crafted values in a PT_DYNAMIC segment.. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

p_lx_elf.cpp in UPX before 3.96 has an integer overflow during unpacking via crafted values in a PT_DYNAMIC segment.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.75%

50.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Upx	Upx	< 3.96

References

https://github.com/upx/upx/commit/8be9da8280dfa69d5df4417d4d81bda1cab78010Patch, Third Party Advisory
https://github.com/upx/upx/issues/317Third Party Advisory
https://github.com/upx/upx/commit/8be9da8280dfa69d5df4417d4d81bda1cab78010Patch, Third Party Advisory
https://github.com/upx/upx/issues/317Third Party Advisory

Timeline

Published: Jun 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20805?

p_lx_elf.cpp in UPX before 3.96 has an integer overflow during unpacking via crafted values in a PT_DYNAMIC segment.

How severe is CVE-2019-20805?

CVE-2019-20805 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20805?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20805?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST