CVE-2026-43846

8.6High

Published 20 Oct 2026 · NVD status: Received · AI triage by gemini-3.8-flash

8.6High

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 execute arbitrary code over the network. They require valid administrative credentials to target the vulnerable feature.

Root cause

A stack-based buffer overflow exists in an unused, non-functional feature.

Affected systems

Advantech products (exact 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

Consult Advantech security advisory for the patched firmware or software version; restrict network access to device management interfaces to trusted administrative hosts as an immediate mitigation.

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

A stack-based buffer overflow vulnerability in a non-functional feature could allow an authenticated attacker to achieve code execution.

References

Source: nvd.nist.gov/vuln/detail/CVE-2026-43846