How severe is CVE-2025-26489?

CVE-2025-26489 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-26489 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-26489?

CVE-2025-26489 affects Nokia Infinera Mtc-9 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-26489?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-26489 have an EU (EUVD) identifier?

Yes. CVE-2025-26489 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201681.

When was CVE-2025-26489 published?

CVE-2025-26489 was published on 2025-12-08 and last updated on 2026-06-17.

CVE-2025-26489

CVE-2025-26489 is a medium-severity vulnerability in Nokia Infinera Mtc-9 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201681
Weakness: CWE-20
Affected product: Nokia Infinera Mtc-9 Firmware
Published: 2025-12-08
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-26489?: 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.
How severe is CVE-2025-26489?: CVE-2025-26489 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-26489 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-26489?: CVE-2025-26489 affects Nokia Infinera Mtc-9 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-26489?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-26489 have an EU (EUVD) identifier?: Yes. CVE-2025-26489 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201681.
When was CVE-2025-26489 published?: CVE-2025-26489 was published on 2025-12-08 and last updated on 2026-06-17.

References

https://www.cve.org/CVERecord?id=CVE-2025-26489

Affected products (1)

cpe:2.3:o:nokia:infinera_mtc-9_firmware:*:*:*:*:*:*:*:*

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