Root privilege escalation via replaceable SUID binary
Published Mar 5, 2026 · Updated Mar 5, 2026
Local privilege escalation in IDC SFX2100 on Linux allows local users to gain root privileges through a SUID XDTerminal binary. The root-owned /home/xd/terminal/XDTerminal file is setuid while residing in an xd-controlled directory, enabling replacement, symlink, PATH, or shared-object hijacking when privileged code invokes it. Low-privileged local access and system-dependent execution of the binary are required; successful exploitation executes attacker-controlled code as root.
Summary
What happened
Local privilege escalation in IDC SFX2100 on Linux allows local users to gain root privileges through a SUID XDTerminal binary. The root-owned /home/xd/terminal/XDTerminal file is setuid while residing in an xd-controlled directory, enabling replacement, symlink, PATH, or shared-object hijacking when privileged code invokes it. Low-privileged local access and system-dependent execution of the binary are required; successful exploitation executes attacker-controlled code as root.
The record
- CVE
- CVE-2026-29123
- Published
- Mar 5, 2026
- Updated
- Mar 5, 2026
- Vendor
- International Datacasting Corporation
- Product
- SFX2100 Satellite Receiver
- Classifications
- CWE-269, T1548.001
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 5, 2026CVE publishedPublication date reported by the CVE source.
- Mar 5, 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=SFX2100
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
- XDTerminal replacement and symlink abuse proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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