Incorrect Permission Assignment(777) on `monitor` Users Home Directory Containing SUID Root Binaries in IDC SFX2100
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Privilege escalation, Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-269 and CWE-863.
Summary
The IDC SFX2100 Satellite Receiver sets overly permissive file system permissions on the monitor user's home directory. The directory is configured with permissions 0777, granting read, write, and execute access to all local users on the system, which may cause local privilege escalation depending on conditions of the system due to the presence of highly privileged processes and binaries residing within the affected directory.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| International Datacasting Corporation (IDC) | SFX2100 Satellite Receiver | SFX2100 and later | — | No fix listed | CNA |
- SFX2100 Satellite Receiver VendorInternational Datacasting Corporation (IDC) Affected SFX2100 and later Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:datacast:sfx2100_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | International Datacasting Corporation (IDC) |
| cpe:2.3:h:datacast:sfx2100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | International Datacasting Corporation (IDC) |
- cpe:2.3:o:datacast:sfx2100_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·International Datacasting Corporation (IDC)
- cpe:2.3:h:datacast:sfx2100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·International Datacasting Corporation (IDC)
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-29127
- 2026-10-03 Alias added: GHSA-ghhf-ppff-f3pr
References
More International Datacasting Corporation (IDC) Sfx2100 Firmware vulnerabilities
- TI-2026-23267 IDC SFX2100 Satellite Receiver bgpd/ospfd/ripd/zebra Config Credential Disclosure via World-Readable Files CVSS 4.0HIGH 8.6
- TI-2026-23265 World-Writable, Root Owned/Run `/etc/udhcpc/default.script` in IDC SFX2100 Satellite Receiver Leads To Potential LPE CVSS 4.0HIGH 8.5
- TI-2026-22970 Unauthenticated RCE via SNMP Default Writable Community String CVSS 4.0CRITICAL 10.0
- TI-2026-22969 Authenticated OS Command Injection via Traceroute Utility leads to Root RCE CVSS 4.0CRITICAL 9.3
- TI-2026-22968 Authenticated OS Command Injection via Ping Utility Leading to RCE as Root CVSS 4.0CRITICAL 9.3
- TI-2026-22972 Hardcoded and Insecure Credentials for "User" Local Account with SSH Access On IDC SFX2100 Satellite Receiver CVSS 4.0CRITICAL 9.2
Sources
- CVE-2026-29127 · CVE Program
- CVE-2026-29127 · NVD
- FIRST EPSS
- GHSA-ghhf-ppff-f3pr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences