CVE-2020-23909

Name: CVE-2020-23909
Creator: NVD / NIST
Published: 2023-07-18T14:15:11.423+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2020-23909 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. Heap-based buffer over-read in function png_convert_4 in file pngex.cc in AdvanceMAME through 2.1.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

7.1/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS Probability

0.28%

19.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
Advancemame	Advancemame	<= 2.1

References

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

Timeline

Published: Jul 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23909?

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

How severe is CVE-2020-23909?

CVE-2020-23909 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23909?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-23909?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST