An issue was discovered in the Merlin.PHP component 0.6.6 for Asuswrt-Merlin devices.
Priority MEDIUM 50Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
An issue was discovered in the Merlin.PHP component 0.6.6 for Asuswrt-Merlin devices. An attacker can execute arbitrary commands because exec.php has a popen call. NOTE: the vendor indicates that Merlin.PHP is designed only for use on a trusted intranet network, and intentionally allows remote code execution
Why it matters now
EPSS 0.05244 92nd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
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
CPE configurations NVD · 28
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:asuswrt-merlin_project:rt-ac5300_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac5300:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt_ac1900p_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt_ac1900p_:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac68u_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac68u:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac68p_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac68p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac88u_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac88u:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
- cpe:2.3:o:asuswrt-merlin_project:rt-ac5300_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac5300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt_ac1900p_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt_ac1900p_:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac68u_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac68u:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac68p_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac68p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac88u_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac88u:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
Show 18 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:asuswrt-merlin_project:rt-ac66u_b1_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac66u_b1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac56u_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac56u:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac3200_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac3200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac68uf_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac68uf:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac87_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac87:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac3100_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac3100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac1900_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac1900:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac86u_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac86u:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
| cpe:2.3:o:asuswrt-merlin_project:rt-ac2900_firmware:*:*:*:*:*:*:*:* | up to 380.70 | Vulnerable | Asuswrt-merlin Project |
| cpe:2.3:h:asuswrt-merlin_project:rt-ac2900:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Asuswrt-merlin Project |
- cpe:2.3:o:asuswrt-merlin_project:rt-ac66u_b1_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac66u_b1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac56u_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac56u:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac3200_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac3200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac68uf_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac68uf:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac87_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac87:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac3100_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac3100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac1900_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac1900:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac86u_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac86u:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
- cpe:2.3:o:asuswrt-merlin_project:rt-ac2900_firmware:*:*:*:*:*:*:*:* Versions up to 380.70 Vulnerable ·Asuswrt-merlin Project
- cpe:2.3:h:asuswrt-merlin_project:rt-ac2900:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Asuswrt-merlin Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-18320
- 2026-10-03 Alias added: GHSA-9p2j-49w6-xprr
References
More Asuswrt-merlin Project Rt-ac1900 Firmware vulnerabilities
- TI-2018-12939 An issue was discovered in the Merlin.PHP component 0.6.6 for Asuswrt-Merlin devices. CVSS 3.0CRITICAL 9.8
Sources
- CVE-2018-18320 · CVE Program
- CVE-2018-18320 · NVD
- FIRST EPSS
- GHSA-9p2j-49w6-xprr · GitHub Advisory Database · CC BY 4.0
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