CVE-2026-121615: critical vulnerability in Linksys E5600
Linksys E5600 Login mesh_login.cgi improper authentication
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 10epss 0.8%
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.
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
Affected products
Linksys · E5600public PoCs found — 1
cve_referencegithub.com/Zimo-666/E5600-cves/tree/main/02-mesh-login-auth-bypassunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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