CVE-2026-4558 | Linksys MR9600 2.0.6.206937 SmartConnect.lua smartConnectConfigure os command injection

VDB-352385 · CVE-2026-4558 · GCVE-100-352385 LINKSYS MR9600 2.0.6.206937 SMARTCONNECT.LUA SMARTCONNECTCONFIGURE OS COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.0 $0-$5k 2.65+ Summaryinfo A vulnerability was found in Linksys MR9600 2.0.6.206937. It has been classified as critical. Affected by this vulnerability is the function smartConnectConfigure of the file SmartConnect.lua. The manipulation of the argument configApSsid/configApPassphrase/srpLogin/srpPassword leads to os command injection. This vulnerability is referenced as CVE-2026-4558. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way. Detailsinfo A vulnerability was found in Linksys MR9600 2.0.6.206937. It has been rated as critical. This issue affects the function smartConnectConfigure of the file SmartConnect.lua. The manipulation of the argument configApSsid/configApPassphrase/srpLogin/srpPassword with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-4558. The exploitation is known to be easy. The attack may be initiated remotely. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1202 for this issue. The exploit is available at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor Linksys Name MR9600 Version 2.0.6.206937 License commercial Website Vendor: https://www.linksys.com/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 8.8 VulDB Meta Temp Score: 8.0 VulDB Base Score: 8.8 VulDB Temp Score: 8.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Os command injection CWE: CWE-78 / CWE-77 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/21/2026 Advisory disclosed 03/21/2026 +0 days VulDB entry created 03/21/2026 +0 days VulDB entry last update Sourcesinfo Vendor: linksys.com Advisory: github.com Status: Not defined CVE: CVE-2026-4558 (🔒) GCVE (CVE): GCVE-0-2026-4558 GCVE (VulDB): GCVE-100-352385 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/21/2026 21:48 Updated: 03/21/2026 21:52 Changes: 03/21/2026 21:48 (56), 03/21/2026 21:52 (1) Complete: 🔍 Submitter: wuuu Cache ID: 99:DAB:101 Submitinfo Accepted Submit #775036: Linksys MR9600 firmware 2.0.6.206937 OS Command Injection (by wuuu) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸