Description
A flaw has been found in Linksys E5600 1.1.0.26. The affected element is the function verify_gemtek_header of the file checkFw.sh of the component Firmware Handler. Executing manipulation can lead to risky cryptographic algorithm. The attack may be launched remotely. The attack requires a high level of complexity. The exploitability is described as difficult. The vendor was contacted early about this disclosure but did not respond in any way.
References (5)
Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.320525
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.320525
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.628642
Exploit, Third Party Advisory patch
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Linksys/E5600.md
Product product
https://www.linksys.com/
Scores
CVSS v3
6.6
EPSS
0.0049
EPSS Percentile
37.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-310
CWE-327
Status
published
Products (1)
linksys/e5600_firmware
1.1.0.26
Published
Aug 19, 2025
Tracked Since
Feb 18, 2026