CVE-2026-4558: Linksys MR9600 SmartConnect.lua smartConnectConfigure os command injection

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-22 · updated 2026-06-17
Weakness: CWE-77

Description

A flaw has been found in Linksys MR9600 2.0.6.206937. Affected is the function smartConnectConfigure of the file SmartConnect.lua. Executing a manipulation of the argument configApSsid/configApPassphrase/srpLogin/srpPassword can lead to os command injection. The attack may be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Linksys MR9600: 2.0.6.206937

References

https://github.com/utmost3/cve/issues/1
https://vuldb.com/?ctiid.352385
https://vuldb.com/?id.352385
https://vuldb.com/?submit.775036
https://www.linksys.com/

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