Local privilege escalation via unquoted service path
Published Jan 16, 2026 · Updated Jan 16, 2026
Unquoted service path in Flexense DiskSorter Server 13.6.12 allows local users to execute code with service privileges. The Windows service registers C:\Program Files\Disk Sorter Server\bin\disksrs.exe without quotation marks, so startup can resolve an attacker-planted executable from a writable parent path. Exploitation requires local low-privileged access and write access to a searched parent directory; successful execution grants the service account's privileges.
Summary
What happened
Unquoted service path in Flexense DiskSorter Server 13.6.12 allows local users to execute code with service privileges. The Windows service registers C:\Program Files\Disk Sorter Server\bin\disksrs.exe without quotation marks, so startup can resolve an attacker-planted executable from a writable parent path. Exploitation requires local low-privileged access and write access to a searched parent directory; successful execution grants the service account's privileges.
The record
- CVE
- CVE-2021-47847
- Published
- Jan 16, 2026
- Updated
- Jan 16, 2026
- Vendor
- Flexense Ltd.
- Product
- DiskSorter Server
- Classifications
- CWE-428, T1574.009
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 16, 2026CVE publishedPublication date reported by the CVE source.
- Jan 16, 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=13.6.12
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
- Disk Sorter Server 13.6.12 Unquoted Service Pathproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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