CVE-2019-20051

MEDIUMNVD 5.55.5—

5.5

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.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 55.0%
KEV: Not listed

Published

December 27, 2019

Last Modified

April 11, 2025

References (6)

cve@mitrehttps://github.com/upx/upx/issues/313
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/
af854a3a-2127-422b-91ae-364da2661108https://github.com/upx/upx/issues/313
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D7XU42G6MUQQXHWRP7DCF2JSIBOJ5GOO/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EUTVSTXAFTD552NO2K2RIF6MDQEHP3BE/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-682Incorrect Calculation

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 09:49 UTCEG score recompute
2026-05-27 09:49 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2019-20051?

CVE-2019-20051 is a medium vulnerability published on December 27, 2019. A floating-point exception was discovered in PackLinuxElf::elfhash in plx_elf.cpp in UPX 3.95. The vulnerability causes an application crash, which leads to denial of service.

When was CVE-2019-20051 disclosed?

CVE-2019-20051 was first published in the National Vulnerability Database on December 27, 2019, with the most recent update on April 11, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-20051 actively exploited?

CVE-2019-20051 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 55.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-20051?

CVE-2019-20051 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2019-20051?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-20051, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-20051

Explore →

Is Your Infrastructure Affected by CVE-2019-20051?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2019-20051

📅 Published

🔄 Last Modified

🔗 References (6)