Root privilege escalation via excessive Linux capability
Published Jun 9, 2026 · Updated Jun 9, 2026
Privilege escalation in Siemens SINEC INS before V1.0 SP2 Update 6 allows local users to gain root access and modify arbitrary files. The /opt/sinecins/bin/sinecINSsftp binary carries cap_dac_override and accepts an attacker-selected FTP configuration, so its process bypasses Linux discretionary access controls and reads or overwrites any system file. An unprivileged sinecins service account can launch the binary; root access follows by overwriting privileged account or scheduled-task files.
Summary
What happened
Privilege escalation in Siemens SINEC INS before V1.0 SP2 Update 6 allows local users to gain root access and modify arbitrary files. The /opt/sinecins/bin/sinecINSsftp binary carries cap_dac_override and accepts an attacker-selected FTP configuration, so its process bypasses Linux discretionary access controls and reads or overwrites any system file. An unprivileged sinecins service account can launch the binary; root access follows by overwriting privileged account or scheduled-task files.
The record
- CVE
- CVE-2026-46748
- Published
- Jun 9, 2026
- Updated
- Jun 9, 2026
- Vendor
- Siemens
- Product
- SINEC INS
- Classifications
- CWE-250, T1548
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 9, 2026CVE publishedPublication date reported by the CVE source.
- Jun 9, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <V1.0 SP2 Update 6
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
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Technologies
Your stack
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Your stack
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