CVE-2026-4558

Linksys MR9600 SmartConnect.lua smartConnectConfigure os command injection

HIGH
8.8
CVSS Score
Published: March 22, 2026 at 05:29 PM UTC
Updated: June 17, 2026 at 10:56 AM UTC
2 products affected across 1 vendorMR9600 FirmwareMR9600

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Severity
HIGH8.8
Exploit prediction
EPSS 5%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.352385
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.352385
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.775036
ExploitIssue TrackingThird Party Advisory
Source: cverecord
https://github.com/utmost3/cve/issues/1
Product
Source: cverecord
https://www.linksys.com/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-78CWE-77

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