What is CVE-2026-29126?

CVE-2026-29126 is a high-severity vulnerability in Datacast Sfx2100, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2026-03-05.

How severe is CVE-2026-29126?

High severity. CVSS v3 base score is 7.8 out of 10.

Auth bypass in Datacast Sfx2100

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.

Published 2026-03-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (4.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000

Affected products

Datacast Sfx2100
Datacast Sfx2100 Firmware
International Datacasting Corporation Sfx2100 Satellite Receiver — versions SFX2100

Weakness classification (CWE)

References

b7efe717-a805-47cf-8e9a-921fca0ce0ce (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-29126?: CVE-2026-29126 is a high-severity vulnerability in Datacast Sfx2100, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2026-03-05.
How severe is CVE-2026-29126?: High severity. CVSS v3 base score is 7.8 out of 10.