CVE-2025-8843: NASM Netwide Assember outmacho.c macho_no_dead_strip heap-based overflow

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-08-11 · updated 2026-06-17
Weakness: CWE-119

Description

A vulnerability was found in NASM Netwide Assember 2.17rc0. This affects the function macho_no_dead_strip of the file outmacho.c. The manipulation leads to heap-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.

Affected products

NASM Netwide Assember: 2.17-rc0

References

https://bugzilla.nasm.us/show_bug.cgi?id=3392934
https://drive.google.com/file/d/1JRHWdjW6FGHDV0CMJe8VinmCQ4vP9ZpR/view?usp=drive_link
https://vuldb.com/?ctiid.319377
https://vuldb.com/?id.319377
https://vuldb.com/?submit.623185
https://vuldb.com/?submit.623186
https://bugzilla.nasm.us/show_bug.cgi?id=3392934
https://vuldb.com/?submit.623186

Get alerted when CVE-2025-8843 or the next vulnerability affects your stack