SYSTEM privilege escalation via writable service directory
Published Jul 12, 2022 · Updated Jul 8, 2025
Privilege escalation in Microsoft Azure Site Recovery before 9.49 allows local users to gain SYSTEM privileges through DLL planting. The automatically started cxprocessserver service runs as SYSTEM, while special permissions let normal users create files in its executable directory and plant a DLL that the service loads. Exploitation requires standard user credentials on the Windows host running the Process Server; the flaw affects replication infrastructure rather than protected workloads.
Summary
What happened
Privilege escalation in Microsoft Azure Site Recovery before 9.49 allows local users to gain SYSTEM privileges through DLL planting. The automatically started cxprocessserver service runs as SYSTEM, while special permissions let normal users create files in its executable directory and plant a DLL that the service loads. Exploitation requires standard user credentials on the Windows host running the Process Server; the flaw affects replication infrastructure rather than protected workloads.
The record
- CVE
- CVE-2022-33675
- Published
- Jul 12, 2022
- Updated
- Jul 8, 2025
- Vendor
- Microsoft
- Product
- Azure Site Recovery
- Classifications
- T1574.001
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 12, 2022CVE publishedPublication date reported by the CVE source.
- Jul 8, 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?
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- Affected versionversion=9.0 <9.49
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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