SYSTEM code execution via rogue server enrollment
Published Aug 14, 2025 · Updated Aug 15, 2025
Privilege escalation in Netskope Client R128 and earlier allows local users to execute code as SYSTEM through a rogue enrollment server. The privileged stAgentSvc accepts an unsigned provisioning JWT over bypassable IPC, trusts its AddonUrl, installs a supplied root CA, and runs an MSI signed under that CA. A low-privileged Windows user must inject into an allowlisted Netskope process and control a reachable TLS server; successful exploitation grants SYSTEM code execution.
Summary
What happened
Privilege escalation in Netskope Client R128 and earlier allows local users to execute code as SYSTEM through a rogue enrollment server. The privileged stAgentSvc accepts an unsigned provisioning JWT over bypassable IPC, trusts its AddonUrl, installs a supplied root CA, and runs an MSI signed under that CA. A low-privileged Windows user must inject into an allowlisted Netskope process and control a reachable TLS server; successful exploitation grants SYSTEM code execution.
The record
- CVE
- CVE-2025-0309
- Published
- Aug 14, 2025
- Updated
- Aug 15, 2025
- Vendor
- Netskope
- Product
- Netskope Client
- Classifications
- CWE-295, T1068
- Attack vector
- physical
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 14, 2025CVE publishedPublication date reported by the CVE source.
- Aug 15, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <129.0.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- NachoVPN Netskope pluginfunctional · demonstrated
- UpSkopeproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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