CVE-2019-20051
MEDIUMDescription
A floating-point exception was discovered in PackLinuxElf::elf_hash in p_lx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.
How to fix
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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 58% of all known CVEs.
References
Related Vulnerabilities
Other CWE-682 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-30780 | High | 7.5 | 57% | - | Fix |
| CVE-2020-14422 | Medium | 5.9 | 13% | - | Fix |
| CVE-2016-7433 | Medium | 5.3 | 9.8% | - | Fix |
| CVE-2018-8319 | Critical | 9.8 | 7.5% | - | - |
| CVE-2023-35641 | High | 8.8 | 7.2% | - | Fix |
| CVE-2020-0022 | High | 8.8 | 6.1% | - | Fix |
Common questions
How do I fix CVE-2019-20051?
Upgrade upx-ucl on debian 13 to 3.96-1 or later.
Is CVE-2019-20051 being actively exploited?
Not that we know of. CVE-2019-20051 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.90% is the estimated probability that it will be exploited in the next 30 days. That is higher than 58% of all scored CVEs.
How severe is CVE-2019-20051?
CVE-2019-20051 has a CVSS v3 base score of 5.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2019-20051 affect?
Published advisories record a fix for upx-ucl (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.