SYSTEM privilege escalation via writable service binaries
Published Nov 8, 2024 · Updated Nov 3, 2025
Privilege escalation in HASOMED GmbH Elefant before 24.04.00 allows local users to execute code as NT AUTHORITY\SYSTEM. The default C:\Elefant1 directory permits all users to replace Firebird_2\bin\fbserver.exe or fbguard.exe, although their Windows services run as SYSTEM. A low-privileged user needs local access and a system reboot; the substituted executable then starts with full SYSTEM privileges.
Summary
What happened
Privilege escalation in HASOMED GmbH Elefant before 24.04.00 allows local users to execute code as NT AUTHORITY\SYSTEM. The default C:\Elefant1 directory permits all users to replace Firebird_2\bin\fbserver.exe or fbguard.exe, although their Windows services run as SYSTEM. A low-privileged user needs local access and a system reboot; the substituted executable then starts with full SYSTEM privileges.
The record
- CVE
- CVE-2024-50590
- Published
- Nov 8, 2024
- Updated
- Nov 3, 2025
- Vendor
- HASOMED GmbH
- Product
- Elefant
- Classifications
- CWE-276, CWE-250, CWE-732, CAPEC-642, T1574.010
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 8, 2024CVE publishedPublication date reported by the CVE source.
- Nov 3, 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 <24.04.00
- Affected versionversion=<24.04.00
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
- Service-binary replacement proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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