How severe is CVE-2025-53558?

CVE-2025-53558 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-53558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-53558?

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-2025-53558 have an EU (EUVD) identifier?

Yes. CVE-2025-53558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23239.

When was CVE-2025-53558 published?

CVE-2025-53558 was published on 2025-07-31 and last updated on 2026-06-17.

CVE-2025-53558

CVE-2025-53558 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-1391.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23239
Weakness: CWE-1391
Published: 2025-07-31
Last modified: 2026-06-17

Description

ZXHN-F660T and ZXHN-F660A provided by ZTE Japan K.K. use a common credential for all installations. With the knowledge of the credential, an attacker may log in to the affected devices.

Frequently asked questions

What is CVE-2025-53558?: ZXHN-F660T and ZXHN-F660A provided by ZTE Japan K.K. use a common credential for all installations. With the knowledge of the credential, an attacker may log in to the affected devices.
How severe is CVE-2025-53558?: CVE-2025-53558 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-53558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-53558?: 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-2025-53558 have an EU (EUVD) identifier?: Yes. CVE-2025-53558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23239.
When was CVE-2025-53558 published?: CVE-2025-53558 was published on 2025-07-31 and last updated on 2026-06-17.

References

https://jvn.jp/en/jp/JVN66546573/

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