How severe is CVE-2025-26488?

CVE-2025-26488 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-26488 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-26488?

CVE-2025-26488 affects Nokia Infinera Mtc-9 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-26488?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-26488 have an EU (EUVD) identifier?

Yes. CVE-2025-26488 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201683.

When was CVE-2025-26488 published?

CVE-2025-26488 was published on 2025-12-08 and last updated on 2026-06-17.

CVE-2025-26488

CVE-2025-26488 is a high-severity vulnerability in Nokia Infinera Mtc-9 Firmware with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201683
Weakness: CWE-20
Affected product: Nokia Infinera Mtc-9 Firmware
Published: 2025-12-08
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-26488?: 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.
How severe is CVE-2025-26488?: CVE-2025-26488 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-26488 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-26488?: CVE-2025-26488 affects Nokia Infinera Mtc-9 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-26488?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-26488 have an EU (EUVD) identifier?: Yes. CVE-2025-26488 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201683.
When was CVE-2025-26488 published?: CVE-2025-26488 was published on 2025-12-08 and last updated on 2026-06-17.

References

https://www.cvcn.gov.it/cvcn/cve/CVE-2025-26488

Affected products (1)

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

More vulnerabilities in Nokia Infinera Mtc-9 Firmware

CVE-2025-27020 — Critical (CVSS 9.8): Improper configuration of the SSH service in Infinera MTC-9 allows an unauthenticated attacker to execute arbitrary…
CVE-2025-27019 — Critical (CVSS 9.8): Remote shell service (RSH) in Infinera MTC-9 version R22.1.1.0275 allows an attacker to utilize password-less user…
CVE-2025-26487 — High (CVSS 8.6): Server-Side Request Forgery (SSRF) vulnerability in Infinera MTC-9 version allows remote unauthenticated users to gain…
CVE-2025-26489 — Medium (CVSS 6.5): Improper input validation in the Netconf service in Infinera MTC-9 allows remote authenticated users to crash the…

All CVEs affecting Nokia Infinera Mtc-9 Firmware →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →