CVE-2020-23909

HIGHNVD 7.17.1—Elevated

7.1

Heap-based buffer over-read in function png_convert_4 in file pngex.cc in AdvanceMAME through 2.1.

CVSS v3: 7.1
EG Score: 7.1(medium)
EPSS: 9.9%
KEV: Not listed

Published

July 18, 2023

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://sourceforge.net/p/advancemame/bugs/285/
af854a3a-2127-422b-91ae-364da2661108https://sourceforge.net/p/advancemame/bugs/285/

Weakness Classification(1)

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

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 16× 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.

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Frequently asked(5)

What is CVE-2020-23909?

CVE-2020-23909 is a high vulnerability published on July 18, 2023. Heap-based buffer over-read in function pngconvert4 in file pngex.cc in AdvanceMAME through 2.1.

When was CVE-2020-23909 disclosed?

CVE-2020-23909 was first published in the National Vulnerability Database on July 18, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-23909 actively exploited?

CVE-2020-23909 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-23909?

CVE-2020-23909 has a CVSS v3 base score of 7.1 (NVD).

How do I remediate CVE-2020-23909?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-23909, 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-2020-23909

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-23909?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)