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SerComm Products Backdoor

Disclosed December 31, 2013    Zeroday : 608 days

Vulnerability Description:

A backdoor exists within certain router firmwares, listening on TCP 32764, that allows a remote attacker to gain full access to a device.



Vulnerable Software/Devices:

SerComm Routers, other devices listed at Elvanderb GitHub (original researcher's PoC/findings)

Vulnerability Severity:


Exploit Availability:

Publicly Available

Exploit Impact:

Remote Code Execution
Remote attackers would spam internet-facing IPs on TCP 32764 looking for devices that are vulnerable to this issue. If successful, an attacker may use their control of a vulnerable device to spread this attack, or siphon data from private networks.

BeyondTrust Prevention and Detection:

BeyondTrust's Retina® Network Security Scanner scans devices to detect for this vulnerability.

  • 32232 - SerComm Products Backdoor (Zero-Day) - Bad Packet
  • 32233 - SerComm Products Backdoor (Zero-Day) - Trigger Stats


Restrict access to listening ports TCP 32764 via the firewall interface within the router configuration, if available.