CVE-2025-34047
published 2025-06-26CVE-2025-34047: A path traversal vulnerability exists in the Leadsec SSL VPN (formerly Lenovo NetGuard), allowing unauthenticated attackers to read arbitrary files on the…
PriorityP181high8.7CVSS 4.0
AVNACLATNPRNUINVCHVINVANSCNSINSANEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
ITWVulnCheck KEV
Exploited in the wild
EPSS
0.46%
36.6th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| beijing_netguard_nebula_information_technology_co_ltd | leadsec_ssl_vpn | — | — |
CVSS provenance
nvdv4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vulncheck8.7HIGH
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GHSA
GHSA-f369-pp94-cgwp: A path traversal vulnerability exists in the Leadsec SSL VPN (formerly Lenovo NetGuard), allowing unauthenticated attackers to read arbitrary files on
ghsa_unreviewed·2025-06-26
CVE-2025-34047 [HIGH] CWE-20 GHSA-f369-pp94-cgwp: A path traversal vulnerability exists in the Leadsec SSL VPN (formerly Lenovo NetGuard), allowing unauthenticated attackers to read arbitrary files on
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.
VulnCheck
Improper Input Validation
vulncheck·2025·CVSS 8.7
CVE-2025-34047 [HIGH] Improper Input Validation
Improper Input Validation
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.
Affected: Leadsec Leadsec SSL VPN
Required Action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Exploitation References: https://vulncheck.com/advisories/leadsec-vpn-path-traversal-file-read; https://www.cve
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yamlhttps://vulncheck.com/advisories/leadsec-vpn-path-traversal-file-readhttps://www.cnvd.org.cn/flaw/show/CNVD-2021-64035https://www.leadsec.com.cn/https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-64035.yaml
2025-06-26
Published
Exploited in the wild