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Vulnerabilities

Vulnerability · CVE-2025-59366

An authentication-bypass vulnerability exists in AiCloud.

Published Nov 25, 2025 · catalog updated Feb 26, 2026 · ASUS Router

Last checked Oct 27, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2025-59366 is not in CISA KEV. FIRST estimates a 12.46% chance of exploitation in the next 30 days. Check whether you run ASUS Router.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
12.46%
Remediation
Advisory link
Affected products
vendor ASUS Router 3.0.0.4_386

An authentication-bypass vulnerability exists in AiCloud. This vulnerability can be triggered by an unintended side effect of the Samba functionality, potentially leading to allow execution of specific functions without proper authorization. Refer to the Security Update for ASUS Router Firmware section on the ASUS Security Advisory for more information.

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 ASUS Router 3.0.0.4_3863.0.0.4_386

How to fix CVE-2025-59366

What to do

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

Should you patch?

CVE-2025-59366 is not in CISA KEV. FIRST estimates a 12.46% chance of exploitation in the next 30 days. Check whether you run ASUS Router.

Which versions are affected?

Compare what you have installed with ASUS Router 3.0.0.4_386 3.0.0.4_386. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 12.46%. There is no CISA KEV listing. 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. Nov 25, 2025 · EUVD

    Detected

    An authentication-bypass vulnerability exists in AiCloud. This vulnerability can be triggered by an unintended side effect of the Samba functionality, potentially leading to allow execution of specific functions without proper authorization. Refer to the Security Update for ASUS Router Firmware section on the ASUS Security Advisory for more information.

  2. Feb 26, 2026 · EUVD

    Updated

    An authentication-bypass vulnerability exists in AiCloud. This vulnerability can be triggered by an unintended side effect of the Samba functionality, potentially leading to allow execution of specific functions without proper authorization. Refer to the Security Update for ASUS Router Firmware section on the ASUS Security Advisory for more information.

Sources

  • CVE.orgVulnerability recordCVE-2025-59366

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-59366

    30-day exploitation probability 12.46%

    first.org
  • EUVDVulnerability recordEUVD-2025-199586

    An authentication-bypass vulnerability exists in AiCloud. This vulnerability can be triggered by an unintended side effect of the Samba functionality, potentially leading to allow execution of specific functions without proper authorization. Refer to the Security Update for ASUS

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 27, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 27, 2026
  • FIRST EPSSOct 27, 2026
  • EUVDOct 26, 2026