Netgear FVS336Gv3/FVS336Gv2 up to 4.3 Telnet backup_configuration os command injection

Summaryinfo

A vulnerability was found in Netgear FVS336Gv3 and FVS336Gv2 up to 4.3. It has been declared as critical. Affected by this issue is the function backup_configuration of the component Telnet. The manipulation results in os command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is identified as CVE-2024-23690. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in Netgear FVS336Gv3 and FVS336Gv2 up to 4.3. Affected is the function backup_configuration of the component Telnet. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The end-of-life Netgear FVS336Gv2 and FVS336Gv3 are affected by a command injection vulnerability in the Telnet interface. An authenticated and remote attacker can execute arbitrary OS commands as root over Telnet by sending crafted "util backup_configuration" commands.

The weakness was released by Jacob Baines. The advisory is shared for download at vulncheck.com. This vulnerability is traded as CVE-2024-23690 since 01/19/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation needs additional levels of successful authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 11/22/2025). The MITRE ATT&CK project declares the attack technique as T1202.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2024-21151). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Netgear

Name

• FVS336Gv2
• FVS336Gv3

Version

• 4.0
• 4.1
• 4.2
• 4.3

License

• commercial

Support

• end of life

Website

• Vendor: https://www.netgear.com/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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