CVE-2025-26488: Nokia Infinera Mtc-9 Firmware

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper Input Validation vulnerability in Infinera MTC-9 allows remote unauthenticated users to crash the service and cause a reboot of the appliance, thus causing a DoS condition, via crafted XML payloads.This issue affects MTC-9: from R22.1.1.0275 before R23.0.

Affected products

• Nokia Infinera Mtc-9 Firmware: from 22.1.1.0275, before 23.0 (fixed in 23.0)

Published 2025-12-08. Last modified 2026-10-07.