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CVE-2026-121615Linksys E5600 Login mesh_login.cgi improper authentication
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.
10.0 CRITICALEPSS 0.75%Not in KEVNVD: Deferred
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 10.0 | CRITICAL | 4.0VulDB (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P |
| 9.3 | CRITICAL | 4.0VulDB (CNA) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P |
| 10.0 | CRITICAL | 3.1VulDB (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| 10.0 | CRITICAL | 3.1VulDB (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RC:C |
| 10.0 | CRITICAL | 3.0VulDB (CNA) | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RC:C |
| 10.0 | HIGH | 2.0VulDB (CNA) | AV:N/AC:L/Au:N/C:C/I:C/A:C |
| 10.0 | HIGH | 2.0VulDB (CNA) | AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:C |
Details
- CVE ID
- CVE-2026-121615
- Status
- Deferred
- Assigner (CNA)
- VulDB
- Published
- Nov 4, 2026
- Last modified
- 2026-11-04 03:17 UTC
- Weaknesses
- CWE-287 · Improper Authentication
Affected Products
As published by the CNA in the CVE record.
LinksysE56001 version range
- 1.1.0.26