ASUS RT-AC66U B1 3.0.0.4.286_51665 was discovered to transmit sensitive information in cleartext.
Priority LOW 39CWE-319Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-319.
Summary
ASUS RT-AC66U B1 3.0.0.4.286_51665 was discovered to transmit sensitive information in cleartext.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00378 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-39086
- 2026-10-03 Alias added: GHSA-9fww-wg5q-g25q
References
Advisory 1
More ASUS Rt-ac66u B1 Firmware vulnerabilities
- TI-2021-02220 In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware <… CVSS 3.1HIGH 7.5
- TI-2021-19533 ASUS RT-A88U 3.0.0.4.386_45898 is vulnerable to Cross Site Scripting (XSS). CVSS 3.1CRITICAL 9.0
Sources
- CVE-2023-39086 · CVE Program
- CVE-2023-39086 · NVD
- FIRST EPSS
- GHSA-9fww-wg5q-g25q · GitHub Advisory Database · CC BY 4.0
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