EUVD-2026-51646
GHSA-hwxp-8fwh-7vcp
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Network-accessible admin interface requires high-privilege credentials (PR:H); no interaction needed; root-level command execution yields full C/I/A impact with no scope change.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
TR1200 v2.4.15 and TR3000 v2.4.21 were discovered to contain a command injection vulnerability in the system.setclock interface. This vulnerability allows attackers to execute arbitrary commands as root via a crafted input.
AnalysisAI
Command injection in Cudy TR1200 (firmware v2.4.15) and TR3000 (firmware v2.4.21) routers via the system.setclock interface enables an authenticated administrator to execute arbitrary OS commands with root privileges. The vulnerability stems from unsanitized input passed directly to a system command, yielding full device compromise - confidentiality, integrity, and availability all rated high. No public exploit or active exploitation (CISA KEV) has been identified; EPSS of 1.21% at the 65th percentile reflects moderate relative risk among disclosed CVEs but low absolute exploitation probability.
Technical ContextAI
The affected devices are Cudy-branded consumer and SMB routers (TR1200 and TR3000 model lines). The vulnerable interface, system.setclock, is a firmware-level API endpoint responsible for time synchronization configuration. The root cause is CWE-77 (Improper Neutralization of Special Elements used in a Command), meaning that attacker-controlled input is concatenated into a shell command without adequate sanitization or escaping. This class of flaw allows shell metacharacters - such as semicolons, backticks, or pipe operators - to break out of the intended command context and inject arbitrary OS instructions. Because the system.setclock function executes in a privileged context, successful injection results in commands running as root. NVD CPE data is listed as n/a, limiting machine-readable product tracking, but the vendor advisory at cudy.com confirms the affected product lines.
RemediationAI
Consult the Cudy security advisory at https://www.cudy.com/pages/security-advisory/cudy-sa-26-7-vufm-1-e for patched firmware and upgrade the TR1200 and TR3000 devices to the vendor-recommended fixed version - no exact patched firmware version number is confirmed from available input data, so the advisory is the authoritative source. As an immediate compensating control, disable WAN-side (remote) management access on the router if it is not operationally required, since exploitation is network-accessible and eliminating internet exposure of the admin interface eliminates the external attack surface. Additionally, restrict management interface access to specific trusted IP addresses via firewall or access control lists, and enforce strong, unique administrative credentials to raise the bar for credential-based exploitation. Note that IP restriction without patching does not eliminate insider or lateral-movement risk.
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Same weakness CWE-77 – Command Injection
View allSame technique Command Injection
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External POC / Exploit Code
Leaving vuln.today