Netgear RBS50 FunJSQ certificate validation

Summaryinfo

A vulnerability classified as critical has been found in Netgear R6230, R6260, R7000, R8900, R9000, XR300, RBR20, RBR50, RBS20 and RBS50. Affected is an unknown function of the component FunJSQ. The manipulation leads to certificate validation. This vulnerability is referenced as CVE-2022-40620. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Netgear R6230, R6260, R7000, R8900, R9000, XR300, RBR20, RBR50, RBS20 and RBS50 and classified as problematic. This issue affects some unknown processing of the component FunJSQ. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is integrity. The summary by CVE is:

FunJSQ, a third-party module integrated on some NETGEAR routers and Orbi WiFi Systems, does not properly validate TLS certificates when downloading update packages through its auto-update mechanism. An attacker (suitably positioned on the network) could intercept the update request and deliver a malicious update package in order to gain arbitrary code execution on affected devices. This affects R6230 before 1.1.0.112, R6260 before 1.1.0.88, R7000 before 1.0.11.134, R8900 before 1.0.5.42, R9000 before 1.0.5.42, and XR300 before 1.0.3.72 and Orbi RBR20 before 2.7.2.26, RBR50 before 2.7.4.26, RBS20 before 2.7.2.26, and RBS50 before 2.7.4.26.

The advisory is shared at kb.netgear.com. The identification of this vulnerability is CVE-2022-40620 since 09/12/2022. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/09/2026). MITRE ATT&CK project uses the attack technique T1587.003 for this issue.

Upgrading eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Wireless LAN Software

Vendor

• Netgear

Name

• R6230
• R6260
• R7000
• R8900
• R9000
• RBR20
• RBR50
• RBS20
• RBS50
• XR300

License

• commercial

Website

• Vendor: https://www.netgear.com/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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