What is the CVSS score of CVE-2025-26489?

CVE-2025-26489 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.2%.

Which versions of Infinera Mtc 9 Firmware are affected by CVE-2025-26489?

Organizations using Improper input validation in the Netconf service in Infinera MTC-9 should be aware of notable risk from CVE-2025-26489, a input validation vulnerability rated CVSS 6.5.

How to fix or mitigate CVE-2025-26489?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Infinera Mtc 9 Firmware CVE-2025-26489

EUVD-2025-201681 MEDIUM

Improper Input Validation (CWE-20)

2025-12-08 a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

Denial Of Service Infinera Mtc 9 Firmware

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 17:54 euvd

EUVD-2025-201681

Analysis Generated

Mar 15, 2026 - 17:54 vuln.today

CVE Published

Dec 08, 2025 - 09:15 nvd

MEDIUM 6.5

DescriptionCVE.org

Improper input validation in the Netconf service in Infinera MTC-9 allows remote authenticated users to crash the service and reboot the appliance, thus causing a DoS condition, via crafted XML payloads.This issue affects MTC-9: from R22.1.1.0275 before R23.0.

Analysis

Technical ContextAI

A denial of service vulnerability allows an attacker to disrupt the normal functioning of a system, making it unavailable to legitimate users. This vulnerability is classified as Improper Input Validation (CWE-20).