CVE-2026-121616: medium-severity vulnerability in Linksys E5600
Linksys E5600 JSON Request mesh_login.cgi strcpy out-of-bounds write
Published
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33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.9epss 0.3%
A vulnerability was identified in Linksys E5600 1.1.0.26. Affected by this vulnerability is the function strcpy of the file /cgi-bin/mesh_login.cgi of the component JSON Request Parser. The manipulation of the argument username/password/token/source/cn/action leads to out-of-bounds write. The attack may be initiated remotely. The exploit is publicly available and might be used. 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:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
Affected products
Linksys · E5600public PoCs found — 1
cve_referencegithub.com/Zimo-666/E5600-cves/tree/main/03-mesh-login-global-overflowunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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