CVE-2025-9146 | BDVDB-2026-290191 Detail

LinksysE5600

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#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-327 Risky Cryptographic Algorithm
CWE-310 Cryptographic Issues

References#

Exploit#

No public exploit known

History#

Version 12025-08-19Record published in the CVE List.

Published

Published: 2025-08-19
Last modified: 2025-08-19

Vendor information

Vendor: Linksys
Product: E5600

All Linksys vulnerabilities

Score

6.6 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 48.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
1.1.0.26
Fixed
Not stated

Scoring System

CVSS v4.0

7.5 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Attack Requirements	None
Privileges Required	High
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

6.6 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	High
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

6.6 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	High
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v2

6.8 Medium

AV:N/AC:H/Au:M/C:C/I:C/A:C/E:ND/RL:ND/RC:UR

Metric breakdown
Access Vector	Network
Access Complexity	High
Authentication	Multiple
Confidentiality Impact	Complete
Integrity Impact	Complete
Availability Impact	Complete

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).