CVE-2019-3573

MEDIUMNVD 5.55.5—

5.5

In libsixel v1.8.2, there is an infinite loop in the function sixel_decode_raw_impl() in the file fromsixel.c, as demonstrated by sixel2png.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 37.3%
KEV: Not listed

Published

January 2, 2019

Last Modified

April 24, 2026

References (4)

cve@mitrehttps://github.com/TeamSeri0us/pocs/tree/master/libsixel
cve@mitrehttps://github.com/saitoha/libsixel/issues/83
af854a3a-2127-422b-91ae-364da2661108https://github.com/TeamSeri0us/pocs/tree/master/libsixel
af854a3a-2127-422b-91ae-364da2661108https://github.com/saitoha/libsixel/issues/83

Weakness Classification(1)

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

CWE-835Loop with Unreachable Exit Condition (Infinite Loop)

Data Freshness Timeline

(refreshed 11× in last 7d / 20× 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.

2026-06-02 20:11 UTCepss_batch
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2026-05-24 16:47 UTCepss_batch
2026-05-22 21:16 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2019-3573?

CVE-2019-3573 is a medium vulnerability published on January 2, 2019. In libsixel v1.8.2, there is an infinite loop in the function sixeldecoderaw_impl() in the file fromsixel.c, as demonstrated by sixel2png.

When was CVE-2019-3573 disclosed?

CVE-2019-3573 was first published in the National Vulnerability Database on January 2, 2019, with the most recent update on April 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-3573 actively exploited?

CVE-2019-3573 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-3573?

CVE-2019-3573 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2019-3573?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-3573, 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

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CVE-2019-3573

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-3573?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)