What is CVE-2020-23909?

CVE-2020-23909 is a high-severity vulnerability in Advancemame, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2023-07-18.

How severe is CVE-2020-23909?

High severity. CVSS v3 base score is 7.1 out of 10.

Out-of-bounds Read in Advancemame

CVE-2020-23909

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

Vulnerability class: Buffer Overflow

Published 2023-07-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (20.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Advancemame

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

sourceforge.net/p/advancemame/bugs/285/ (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-23909?: CVE-2020-23909 is a high-severity vulnerability in Advancemame, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2023-07-18.
How severe is CVE-2020-23909?: High severity. CVSS v3 base score is 7.1 out of 10.