Vulnerability Intelligence Report
Linksys E5600 Login mesh_login.cgi improper authentication
CVE-2026-121615
A vulnerability was determined in Linksys E5600 1.1.0.26. Affected is an unknown function of the file /cgi-bin/mesh_login.cgi of the component Login Handler. Executing a manipulation can lead to improper authentication. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.
Authentication Bypass
No Active Exploit Signals
CVSS Base Score
10.0
CRITICAL
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-287 ↗Improper Authentication
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Linksys | E5600 | 1.1.0.26 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Vulnerability Class
Authentication Bypass
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulDB · Researcher · Switzerland |
| Reserved | 2026-11-03T16:39:51 |
| Published | 2026-11-04T02:15:20 |
| Last Updated | 2026-11-04T02:15:20 |
Community Chatter & Buzz