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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.abdulmhsblog.com/posts/sfx2100-vulns/	Exploit Third Party Advisory
https://www.abdulmhsblog.com/posts/sfx2100-vulns/	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:datacast:sfx2100_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:datacast:sfx2100:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-05 02:16

Updated : 2026-03-11 18:34

NVD link : CVE-2026-29126

Mitre link : CVE-2026-29126

CVE.ORG link : CVE-2026-29126

JSON object : View

Products Affected

datacast

sfx2100_firmware
sfx2100

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

CWE-863

Incorrect Authorization

{"id": "CVE-2026-29126", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}], "cvssMetricV40": [{"type": "Secondary", "source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "USER", "baseScore": 8.5, "Automatable": "NO", "attackVector": "LOCAL", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "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:U/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-03-05T02:16:51.993", "references": [{"url": "https://www.abdulmhsblog.com/posts/sfx2100-vulns/", "tags": ["Exploit", "Third Party Advisory"], "source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce"}, {"url": "https://www.abdulmhsblog.com/posts/sfx2100-vulns/", "tags": ["Exploit", "Third Party Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "description": [{"lang": "en", "value": "CWE-732"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Incorrect permission assignment (world-writable file) in /etc/udhcpc/default.script\u00a0in 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\u00a0DHCP event script, which is executed when a DHCP lease is obtained, renewed, or lost."}, {"lang": "es", "value": "Asignaci\u00f3n incorrecta de permisos (archivo escribible por todos) en /etc/udhcpc/default.script en el receptor de sat\u00e9lite SFX2100 de International Data Casting (IDC) permite a un atacante local sin privilegios ejecutar potencialmente comandos arbitrarios con privilegios de root (escalada de privilegios local y persistencia) mediante la modificaci\u00f3n de un script de evento DHCP de BusyBox udhcpc propiedad de root y escribible por todos, que se ejecuta cuando se obtiene, renueva o pierde una concesi\u00f3n DHCP."}], "lastModified": "2026-03-11T18:34:00.420", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:datacast:sfx2100_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7C57B6A9-CAF9-4C8A-85FC-562E16F291FE"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:datacast:sfx2100:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "2A3BC5C9-39D5-4908-B470-A46E9ECFD6AB"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "b7efe717-a805-47cf-8e9a-921fca0ce0ce"}