CVE-2025-34047

Leadsec VPN Path Traversal Arbitrary File Read

CVSS 8.7 HIGHEPSS 0.5%CWE-20 CWE-22

Vexday Risk Score

21Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 8.7EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

26 jun 2025Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

A path traversal vulnerability exists in the Leadsec SSL VPN (formerly Lenovo NetGuard), allowing unauthenticated attackers to read arbitrary files on the underlying system via the ostype parameter in the /vpn/user/download/client endpoint. This flaw arises from insufficient input sanitation, enabling traversal sequences to escape the intended directory and access sensitive files. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-05 UTC.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Productos afectados

Beijing NetGuard Nebula Information Technology Co., Ltd. · Leadsec SSL VPN

Referencias

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yaml https://vulncheck.com/advisories/leadsec-vpn-path-traversal-file-read https://www.cnvd.org.cn/flaw/show/CNVD-2021-64035 https://www.leadsec.com.cn/