How to Fix CVE-2026-29126: SFX2100 Satellite Receiver (Bundle Sibling)
By Sai Kiran Pandrala. Last verified: 2026-05-25.
CVE-2026-29126 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 | 8.5 (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-732 Incorrect Permission Assignment for Critical Resource |
What's different about CVE-2026-29126?
Incorrect permission assignment (world-writable file) in /etc/udhcpc/default.script in International Data Casting (IDC) SFX2100 Satellite Receiver allows a local unprivileged attacker to potentially execute arbitrary commands with root privileges (local privilege escalation and persistence) via modification of a root-owned, world-writable BusyBox udhcpc DHCP event script, which is executed when a DHCP lease is obtained, renewed, or lost.
How to fix CVE-2026-29126
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-2026-29126?
Yes. Both CVEs are addressed by the same vendor patch. Applying the patched build closes the full bundle.
Is CVE-2026-29126 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-2026-29126
- 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.*