CVE-2025-9146

Linksys E5600 Firmware checkFw.sh verify_gemtek_header risky encryption

Published Aug 19, 2025 CVSS 4.0 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-28817 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.
History
Type Values Removed Values Added
First Time appeared Linksys e5600 Firmware
CPEs cpe:2.3:h:linksys:e5600:-:*:*:*:*:*:*:*
cpe:2.3:o:linksys:e5600_firmware:1.1.0.26:*:*:*:*:*:*:*
Vendors & Products Linksys e5600 Firmware
Type Values Removed Values Added
First Time appeared Linksys
Linksys e5600
Vendors & Products Linksys
Linksys e5600
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Linksys E5600 Firmware checkFw.sh verify_gemtek_header risky encryption
Weaknesses CWE-310
CWE-327
References
Metrics cvssV2_0

{'score': 6.8, 'vector': 'AV:N/AC:H/Au:M/C:C/I:C/A:C/E:ND/RL:ND/RC:UR'}

cvssV3_0

{'score': 6.6, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R'}

cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:R'}

cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Aug 19, 2025, 7:20 PM
Reserved
Aug 19, 2025, 7:25 AM
Status
Analyzed
Published
Aug 19, 2025, 4:15 PM
Modified
Jun 17, 2026, 10:08 AM