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Vulnerabilities

Vulnerability · CVE-2025-53558

Use of Weak Credentials

Published Apr 30, 2026 · catalog updated Apr 30, 2026 · ZTE Japan. K.K. ZXHN-F660T

Patch now

CVE-2025-53558 is in the CISA known-exploited catalog. Confirm ZTE Japan. K.K. ZXHN-F660T against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
1.39%
Remediation
Remediation guidance
Affected products
vendor ZTE Japan. K.K. ZXHN-F660T

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. VulnCheck canary evidence. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor ZTE Japan. K.K. ZXHN-F660Tversion unspecified

How to fix CVE-2025-53558

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-53558 is in the CISA known-exploited catalog. Confirm ZTE Japan. K.K. ZXHN-F660T against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 1.39%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 30, 2026 · VulnCheck KEV

    Detected

    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. VulnCheck canary evidence. Initial-access exploit intelligence.

  2. Apr 30, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2025-53558

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-53558

    30-day exploitation probability 1.4%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.