Vulnerability · Published Jun 27, 2025 · Assigned by VulDB

CVE-2025-6751Linksys E8450 HTTP POST Request portal.cgi set_device_language buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in E8450 from Linksys. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.7%top 46.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability, which was classified as critical, was found in Linksys E8450 up to 1.2.00.360516. This affects the function set_device_language of the file portal.cgi of the component HTTP POST Request Handler. The manipulation of the argument dut_language leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
Linksys	E8450	1.2.00.360516

Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-314049 | Linksys E8450 HTTP POST Request portal.cgi set_device_language buffer overflow vdb-entry, technical-description
VDB-314049 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #598217 | Linksys Holdings, Inc. E8450 <=Ver. 1.2.00.360516 Buffer Overflow third-party-advisory
https://github.com/CH13hh/tmp_store_cc/blob/main/E8450/1.md related
https://github.com/CH13hh/tmp_store_cc/blob/main/E8450/1.md#poc exploit
https://www.linksys.com/ product