SYSTEM code execution via exposed function
Published Aug 20, 2026 · Updated Aug 20, 2026
Privilege escalation in Parallels RAS Client 21.0.26296 allows local users to execute arbitrary code as SYSTEM via the RDP Backend Service. Within the RAS RDP Backend Service, a privileged function is exposed to lower-privileged local code; public records do not identify the function name beyond describing it as an exposed dangerous function. Exploitation requires the ability to run low-privileged code on the host, and the published impact is bounded to local execution in the SYSTEM context.
Summary
What happened
Privilege escalation in Parallels RAS Client 21.0.26296 allows local users to execute arbitrary code as SYSTEM via the RDP Backend Service. Within the RAS RDP Backend Service, a privileged function is exposed to lower-privileged local code; public records do not identify the function name beyond describing it as an exposed dangerous function. Exploitation requires the ability to run low-privileged code on the host, and the published impact is bounded to local execution in the SYSTEM context.
The record
- CVE
- CVE-2026-13121
- Published
- Aug 20, 2026
- Updated
- Aug 20, 2026
- Vendor
- Parallels
- Product
- Parallels Client
- Classifications
- CWE-749, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 20, 2026CVE publishedPublication date reported by the CVE source.
- Aug 20, 2026Record 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=21.0.26296
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
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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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