Vulnerability · Published Nov 2, 2026 · Assigned by VulDB

CVE-2026-120283Linksys E8450 portal.cgi strcpy stack-based overflow

Critical 10.0

In plain English

A critical-severity stack 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 0.6% (higher than 48% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)0.6%top 51.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in Linksys E8450 1.2.00.360516. Affected is the function strcpy of the file /www/cgi-bin/portal.cgi. Such manipulation of the argument hidden_timezone leads to stack-based buffer overflow. The attack can be executed remotely. 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-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-429627 | Linksys E8450 portal.cgi strcpy stack-based overflow vdb-entry, technical-description
VDB-429627 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-120283 | CVE Analysis and Report third-party-advisory
Submit #1014924 | Linksys E8450 firmware 1.2.00.360516 Linksys E8450 portal.cgi hidden_timezone stack buffer overflow third-party-advisory
https://www.linksys.com/ product