CVE-2026-43835
8.6HighPublished 20 Oct 2026 · NVD status: Received · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- —
Impact
Authenticated attackers with high privileges can upload forged firmware to permanently compromise the device. They need network access to the management interface and an authenticated high-privilege account.
Root cause
The firmware upgrade mechanism fails to properly validate the authenticity or integrity of uploaded firmware files.
Affected systems
Advantech device firmware; specific models and versions not listed — check the vendor advisory.
CVSS v4.0 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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:X/R:X/V:X/RE:X/U:X
Fix & remediation
Check the Advantech advisory for the targeted firmware patch. In the meantime, restrict network access to the device management interface to trusted admin hosts and review administrative accounts.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
A vulnerability in the firmware upgrade functionality could allow an authenticated attacker to upload a forged firmware upgrade file, potentially compromising the device permanently.