Totolink X5000R 9.1.0cu_2415_B20250515 /usr/sbin/lighttpd CsteSystem vlanVidLan1 os command injection

Summaryinfo

A vulnerability labeled as critical has been found in Totolink X5000R 9.1.0cu_2415_B20250515. This affects the function CsteSystem of the file /usr/sbin/lighttpd. The manipulation of the argument vlanVidLan1 results in os command injection. This vulnerability was named CVE-2025-70329. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in Totolink X5000R 9.1.0cu_2415_B20250515. Affected is the function CsteSystem of the file /usr/sbin/lighttpd. The manipulation of the argument vlanVidLan1 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:

TOTOLink X5000R v9.1.0cu_2415_B20250515 contains an OS command injection vulnerability in the setIptvCfg handler of the /usr/sbin/lighttpd executable. The vlanVidLan1 (and other vlanVidLanX) parameters are retrieved via Uci_Get_Str and passed to the CsteSystem function without adequate validation or filtering. This allows an authenticated attacker to execute arbitrary shell commands with root privileges by injecting shell metacharacters into the affected parameters.

The advisory is shared for download at notion.so. This vulnerability is traded as CVE-2025-70329 since 01/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/24/2026). 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Totolink

Name

• X5000R

Version

• 9.1.0cu_2415_B20250515

License

• commercial

Website

• Vendor: https://www.totolink.net/

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion