Paper/Archive/CVE-2026-121615

CVE-2026-121615

Linksys E5600 — Linksys E5600 Login mesh_login.cgi improper authentication

CVSS 10.0 (CNA)10.0 / 10 × 3030.0 Not in CISA KEV+300.0 No EPSS score.000 × 200.0 No public exploit+100.0 SSVC exploitation: unknown+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

E56001.1.0.26–CNA

Scores by source

VulDB (CNA)10.0CVSS: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

VulDB (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C

VulDB (CNA)10.0CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C

References

refvuldb.com/vuln/430463 refvuldb.com/vuln/430463/cti writeupvuldb.com/cve/CVE-2026-121615 writeupvuldb.com/submit/1023310 exploitgithub.com/Zimo-666/E5600-cves/tree/main/02-mesh-login-auth-bypass reflinksys.com