CVE-2018-19759

MEDIUMNVD 5.55.5—

5.5

There is a heap-based buffer over-read at stb_image_write.h (function: stbi_write_png_to_mem) in libsixel 1.8.2 that will cause a denial of service.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 35.4%
KEV: Not listed

Published

November 30, 2018

Last Modified

April 24, 2026

References (2)

cve@mitrehttps://bugzilla.redhat.com/show_bug.cgi?id=1649202
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1649202

Weakness Classification(1)

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

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 10× 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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2026-05-22 21:15 UTCepss_batch

Frequently asked(5)

What is CVE-2018-19759?

CVE-2018-19759 is a medium vulnerability published on November 30, 2018. There is a heap-based buffer over-read at stbimagewrite.h (function: stbiwritepngtomem) in libsixel 1.8.2 that will cause a denial of service.

When was CVE-2018-19759 disclosed?

CVE-2018-19759 was first published in the National Vulnerability Database on November 30, 2018, 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-2018-19759 actively exploited?

CVE-2018-19759 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 35.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-19759?

CVE-2018-19759 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2018-19759?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-19759, 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.

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CVE-2018-19759

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-19759?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)