CVE-2025-59366Network attack vector

Unauthenticated function execution via Samba side effect

Published Nov 25, 2025 · Updated Feb 26, 2026

Authentication bypass in ASUS Router firmware 3.0.0.4_386, 3.0.0.4_388, and 3.0.0.6_102 allows remote attackers to execute protected functions. An unintended side effect of Samba functionality causes AiCloud to invoke specific functions without proper authorization; ASUS has not disclosed the affected request path or validation error. Network access without credentials or user interaction is sufficient when the prerequisite Samba-related condition is present.

CVSS severity9.2
Critical
EPSS probability15.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Authentication bypass in ASUS Router firmware 3.0.0.4_386, 3.0.0.4_388, and 3.0.0.6_102 allows remote attackers to execute protected functions. An unintended side effect of Samba functionality causes AiCloud to invoke specific functions without proper authorization; ASUS has not disclosed the affected request path or validation error. Network access without credentials or user interaction is sufficient when the prerequisite Samba-related condition is present.

The record

CVE
CVE-2025-59366
Published
Nov 25, 2025
Updated
Feb 26, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.2ASUSCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Path Traversal
CWE-78OS Command Injection
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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