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Vulnerability record · CVE-2026-29126 · published 5 March 2026

CVE-2026-29126: Datacast sfx2100 firmware incorrect permission assignment vulnerability

Datacast · Sfx2100 Firmware

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.

8.5 CVSS 4.0 High EPSS 0.16% · top 95.1% CWE-732 · Incorrect permission assignmentCWE-863 · Incorrect authorization
8.5CVSS 4.0 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.abdulmhsblog.com/posts/sfx2100-vulns/ ExploitThird Party Advisory
https://www.abdulmhsblog.com/posts/sfx2100-vulns/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-28775Datacast sfx2100 firmware insecure default initialization vulnerabilityAn unauthenticated Remote Code Execution (RCE) vulnerability exists in the SNMP service of International Datacasting Corporation (IDC) SFX Series Sup…EPSS 1.1%9.3CVE-2026-28773Datacast sfx2100 firmware os command injection vulnerabilityThe web-based Ping diagnostic utility (/IDC_Ping/main.cgi) in International Datacasting Corporation (IDC) SFX Series SuperFlex Satellite  Receiver We…EPSS 2.5%9.3CVE-2026-28774Datacast sfx2100 firmware os command injection vulnerabilityAn OS Command Injection vulnerability exists in the web-based Traceroute diagnostic utility of International Datacasting Corporation (IDC) SFX Series…EPSS 2.9%9.2CVE-2026-29127Datacast sfx2100 firmware improper privilege management vulnerabilityThe IDC SFX2100 Satellite Receiver sets overly permissive file system permissions on the monitor user's home directory. The directory is configured w…EPSS 0.15%9.2CVE-2026-28777Datacast sfx2100 firmware hard-coded credentials vulnerabilityInternational Datacasting Corporation (IDC) SFX2100 Satellite Receiver, trivial password for the `user` (usr) account. A remote unauthenticated attac…EPSS 0.63%9.2CVE-2026-29120Datacast sfx2100 firmware hard-coded credentials vulnerabilityThe /root/anaconda-ks.cfg installation configuration file in International Datacasting Corporation (IDC) SFX Series(SFX2100) SuperFlex Satellite Rece…EPSS 0.16%8.8CVE-2026-29119Datacast sfx2100 firmware hard-coded credentials vulnerabilityInternational Datacasting Corporation (IDC) SFX Series SuperFlex(SFX2100) SatelliteReceiver contains hardcoded and insecure credentials for the `admi…EPSS 0.63%8.6CVE-2026-29128Datacast sfx2100 firmware insufficiently protected credentials vulnerabilityIDC SFX2100 Satellite Receiver firmware ships with multiple daemon configuration files for routing components (e.g., zebra, bgpd, ospfd, and ripd) th…EPSS 0.29%

Source: NIST National Vulnerability Database (record CVE-2026-29126), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.