CVE-2026-121616 PUBLISHED

Linksys E5600 JSON Request mesh_login.cgi strcpy out-of-bounds write

Assigner: VulDB
Reserved: 03.11.2026 Published: 04.11.2026 Updated: 04.11.2026

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.

Metrics

CVSS Vector: 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
CVSS Score: 6.9

Product Status

Vendor Linksys
Product E5600
Versions
  • Version 1.1.0.26 is affected

Credits

  • liuyingqi (VulDB User) reporter
  • VulDB CNA Team coordinator

References

Problem Types

  • Out-of-bounds Write CWE
  • Memory Corruption CWE