What is the CVSS score of CVE-2026-29126?

CVE-2026-29126 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Sfx2100 Firmware are affected by CVE-2026-29126?

A high-severity vulnerability in Sfx2100 firmware allows unauthorized access to critical resources due to improper permission controls, affecting all unpatched devices up to the latest version.

Is there a public PoC exploit available for CVE-2026-29126?

Yes, a public proof-of-concept exploit is available for CVE-2026-29126. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-29126?

Within 24 hours: Inventory all Sfx2100 devices in production and development environments; isolate or restrict network access to affected systems if operationally feasible. Within 7 days: Implement compensating controls including network segmentation, access logging, and WAF rules to block exploitation attempts; contact vendor for patch timeline. Within 30 days: Apply vendor patch immediately upon release; conduct forensic review of logs for signs of prior exploitation.

Sfx2100 Firmware CVE-2026-29126

HIGH

Incorrect Permission Assignment for Critical Resource (CWE-732)

2026-03-05 b7efe717-a805-47cf-8e9a-921fca0ce0ce

Privilege Escalation Sfx2100 Firmware

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

PoC Detected

Mar 11, 2026 - 18:34 vuln.today

Public exploit code

CVE Published

Mar 05, 2026 - 02:16 nvd

HIGH 7.8

DescriptionCVE.org

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.

AnalysisAI

Sfx2100 Firmware versions up to - is affected by incorrect permission assignment for critical resource (CVSS 7.8).

Technical ContextAI

This vulnerability (CWE-732: Incorrect Permission Assignment for Critical Resource) affects 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.