How to Fix CVE-2026-29121: SFX2100 Satellite Receiver (Bundle Sibling)
By Sai Kiran Pandrala. Last verified: 2026-05-25.
CVE-2026-29121 is a sibling vulnerability in the same vendor advisory as CVE-2026-28769. Apply the same patched build and you close both. The technical detail below is what differs.
| Severity | 8.3 (High) |
|---|---|
| Actively exploited? | No public listing in CISA KEV |
| Affected | SFX2100 Satellite Receiver SFX2100 |
| Fixed in | Same patched build as CVE-2026-28769 |
| Type (CWE) | CWE-269 Improper Privilege Management |
What's different about CVE-2026-29121?
International Data Casting (IDC) SFX2100 satellite receiver comes with the /sbin/ip utility installed with the setuid bit set. This configuration grants elevated privileges to any local user who can execute the binary. A local actor is able to use the GTFObins resource to preform privileged file reads as the root user on the local file system and may potentially lead to other avenues for preforming privileged actions.
How to fix CVE-2026-29121
Apply the patched build per the primary write-up: How to Fix CVE-2026-28769. All commands, verification steps, and rollback notes for SFX2100 Satellite Receiver are listed there.
Frequently asked questions
Does the CVE-2026-28769 patch close CVE-2026-29121?
Yes. Both CVEs are addressed by the same vendor patch. Applying the patched build closes the full bundle.
Is CVE-2026-29121 listed in CISA KEV?
No public KEV listing at the time of this writing.
Where is the official advisory?
See https://www.abdulmhsblog.com/posts/sfx2100-vulns/
References
- Official vendor advisory: https://www.abdulmhsblog.com/posts/sfx2100-vulns/
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-29121
- CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
- Primary: How to Fix CVE-2026-28769
*Written by Sai Kiran Pandrala. Part of the SFX2100 Satellite Receiver bundle. Full procedure at how-to-fix-cve-2026-28769.*