Vulnerability · Published Aug 24, 2025 · Assigned by VulDB

CVE-2025-9379Belkin AX1800 Firmware Update data authenticity

High 7.2

In plain English

A high-severity insufficient verification of data authenticity in AX1800 from Belkin. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)0.3%top 73.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Belkin	AX1800	1.1.00.016

Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R

References

VDB-321212 | Belkin AX1800 Firmware Update data authenticity vdb-entry
VDB-321212 | CTI Indicators (IOB, IOC) signature, permissions-required
Submit #628641 | Belkin AX1800 WiFi 6 Router V1.1.00.016 CWE-20 Improper Input Validation third-party-advisory
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Belkin/AX1800.md patch