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VulnerabilityPublished

CVE-2026-29126: International Datacasting SFX2100 Satellite Receiver · Incorrect Permissions

Affects International Datacasting SFX2100 Satellite ReceiverSource CVE Database V5

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Not known to be exploited · CVSS 8.5 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
8.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
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/AU:N/R:U

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
International Datacasting CorporationSFX2100 Satellite ReceiverAffected
  • =SFX2100
Fixed in–

AI-suggested

  1. Immediately audit and correct file permissions on /etc/udhcpc/default.script to restrict write access to root only (e.g., chmod 755 or stricter).
  2. Implement file integrity monitoring on critical scripts and configuration files to detect unauthorized changes.
  3. Limit local access to trusted personnel and secure physical and remote access channels to the satellite receivers.
  4. Employ network segmentation to isolate satellite receivers from general user networks, reducing the risk of local attacker presence.
  5. Monitor DHCP lease events and system logs for unusual activity that may indicate exploitation attempts.
  6. Engage with IDC for official patches or firmware updates addressing this vulnerability and apply them promptly once available.
  7. Consider deploying host-based intrusion detection systems (HIDS) tailored for embedded devices to detect privilege escalation attempts.
  8. Review and harden other scripts and binaries with elevated privileges to prevent similar permission misconfigurations.

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.

References

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