CVE-2020-13109

Name: CVE-2020-13109
Creator: NVD / NIST
Published: 2020-05-16T02:15:11.3+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.76%

Last modified Jun 17, 2026

CVE-2020-13109 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Morita Shogi 64 through 2020-05-02 for Nintendo 64 devices allows remote attackers to execute arbitrary code via crafted packet data to the built-in modem because 0x800b3e94 (aka the IF subcommand to top-level command 7) has a stack-based buffer overflow.. EPSS estimates a 4.76% chance of exploitation in the next 30 days.

Description

Morita Shogi 64 through 2020-05-02 for Nintendo 64 devices allows remote attackers to execute arbitrary code via crafted packet data to the built-in modem because 0x800b3e94 (aka the IF subcommand to top-level command 7) has a stack-based buffer overflow.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

4.76%

90.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Seta	Morita Shogi 64	<= 2020-05-02

References

https://cturt.github.io/shogihax.htmlExploit, Third Party Advisory
https://github.com/CTurt/shogihaxThird Party Advisory
https://cturt.github.io/shogihax.htmlExploit, Third Party Advisory
https://github.com/CTurt/shogihaxThird Party Advisory

Timeline

Published: May 16, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13109?

How severe is CVE-2020-13109?

CVE-2020-13109 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.76% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13109?

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-2020-13109?

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

Scan your code now

Source: NVD / NIST