Is CVE-2025-26489 in the CISA KEV catalog?

No. CVE-2025-26489 is not currently on the CISA Known Exploited Vulnerabilities list.

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

CVE-2025-26489 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2025-26489?

CVE-2025-26489 has an EPSS score of 0.28% (20th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-26489?

Upgrade infinera mtc-9 firmware to 23.0 or later.

CVE & CISA-KEV Catalog

CVE-2025-26489

MEDIUM

6.5

CVSS v3

NVD

Description

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.

CWE-20Improper Input Validation

How to fix

Remediation Available

infinera mtc-9 firmwareNVD

Affected:>= 22.1.1.0275, < 23.0Fixed in:23.0CVE-2025-26489derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.28%probability of exploitation in 30 days

20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Third-Party Advisory1

cve.org

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-22.