CVE-2025-8844 NASM Netwide Assember preproc.c parse_smacro_template null pointer dereference

Medium 4.8 Published 11 Aug 2025 Updated 11 Aug 2025

A local attacker can cause a denial of service in the NASM assembler via a null pointer dereference in the preprocessor.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-8844?

CVE-2025-8844 is a medium-severity vulnerability in Nasm Netwide Assembler, published on 11 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability was determined in NASM Netwide Assember 2.17rc0. This vulnerability affects the function parse_smacro_template of the file preproc.c. The manipulation leads to null pointer dereference. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.

Weakness: CWE-476, CWE-404

Which versions are affected by CVE-2025-8844?

It affects 1 product.

Products include Nasm Netwide Assembler.

How do I fix CVE-2025-8844?

No fix has been published for CVE-2025-8844 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-8844 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8844 exists.

All Nasm Netwide Assembler vulnerabilities

Sources

Also known as AZL-66213, AZL-66230, DEBIAN-CVE-2025-8844, GHSA-3r2j-2686-wg8h, UBUNTU-CVE-2025-8844.