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How the CVE Works
CVE-2025-29659 exploits a flaw in the `cmd_listen` function within the `cmd` binary of Yi IOT XY-3820 firmware version 6.0.24.10. The vulnerability allows unauthenticated remote attackers to execute arbitrary commands via crafted network requests. The `cmd_listen` function improperly sanitizes user-supplied input, enabling command injection. Attackers leverage this to gain root access on the device, leading to full system compromise. The exploit typically involves sending malicious payloads to the device’s exposed service port, which processes the input without validation.
DailyCVE Form
Platform: Yi IOT XY-3820
Version: 6.0.24.10
Vulnerability: Remote Command Execution
Severity: Critical
Date: 06/23/2025
Prediction: Patch by 08/2025
What Undercode Say
nc -zv <TARGET_IP> <PORT> echo "malicious_cmd" | telnet <TARGET_IP> strings ./cmd | grep cmd_listen
How Exploit
- Crafted payload sent to
cmd_listen. - Exploits lack of input sanitization.
- Gains root shell access.
Protection from this CVE
- Disable exposed services.
- Apply firmware updates.
- Network segmentation.
Impact
- Full device compromise.
- Unauthorized data access.
- Botnet recruitment.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
