CVE-2026-43858
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
Remote attackers with high privileges can execute arbitrary code on the target system. They require network access and existing administrative or high-privilege credentials.
Root cause
A stack-based buffer overflow allows memory corruption during processing of network requests.
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
Check the Advantech security advisory for the specific patched firmware or software version. As an interim workaround, restrict network access to the management interfaces to trusted IP addresses only.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
A stack-based buffer overflow vulnerability could allow a remote authenticated attacker to achieve arbitrary code execution.