CVE-2025-9146 - CVE House
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Status published High CVE-2025-9146

Linksys E5600 Firmware checkFw.sh verify_gemtek_header risky encryption

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • IOT_Res (VulDB User)

References

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Affected Vendor

Affected Software

E5600
Vulnerable Versions:
1.1.0.26

Timeline

Official Publish: August 19th, 2025
Last Modified: August 19th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: 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

Weaknesses (CWE)

CWE-327 CWE-310

MITRE ATT&CK TTPs

T1040 Network Sniffing
Credential Access
T1552 Unsecured Credentials
Credential Access
T1557 Adversary-in-the-Middle
Collection
T1078 Valid Accounts
Persistence
T1041 Exfiltration Over C2 Channel
Exfiltration