High severityNVD Advisory· Published Jun 26, 2025· Updated Apr 15, 2026

CVE-2025-34047

Description

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Projectdiscovery/Nuclei Templatesreferences
Portwise/SSL VPNllm-fuzzy

Patches

Vulnerability mechanics

References

github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yamlnvd
vulncheck.com/advisories/leadsec-vpn-path-traversal-file-readnvd
www.cnvd.org.cn/flaw/show/CNVD-2021-64035nvd
www.leadsec.com.cnnvd

News mentions

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