CVE-2026-29126 World-Writable, Root Owned/Run `/etc/udhcpc/default.script` in IDC SFX2100 Satellite Receiver Leads To Potential LPE
A local attacker can escalate privileges to root by modifying a world-writable DHCP script on the IDC SFX2100 Satellite Receiver.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-29126?
CVE-2026-29126 is a high-severity vulnerability in International Datacasting Corporation SFX2100 Satellite Receiver, published on 5 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-29126?
It affects 1 product.
Products include Datacast Sfx2100 Firmware.
How do I fix CVE-2026-29126?
No fix has been published for CVE-2026-29126 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-29126 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29126 exists.
Other vulnerabilities in International Datacasting Corporation SFX2100 Satellite Receiver
- CVE-2026-28775 Unauthenticated RCE via SNMP Default Writable Community String
- CVE-2026-28773 Authenticated OS Command Injection via Ping Utility Leading to RCE as Root
- CVE-2026-28774 Authenticated OS Command Injection via Traceroute Utility leads to Root RCE
- CVE-2026-29127 Incorrect Permission Assignment(777) on `monitor` Users Home Directory Containing SUID Root Binaries in IDC SFX2100
- CVE-2026-28777 Hardcoded and Insecure Credentials for "User" Local Account with SSH Access On IDC SFX2100 Satellite Receiver
Sources
Also known as GHSA-x4vv-6742-qcpf.