High8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

PT-2025-70: Heap-based buffer overflow during HTTP-header parsing in LCD KVM over IP switch CL5708IM

Error type:

Vulnerability vector:

  • Base vulnerability score (CVSSv4.0): CVSS:4.0/ AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • Severity (CVSSv4.0): 8.7 (High)

Description:

The vulnerability was identified in LCD KVM over IP switch CL5708IM firmware version <v2.2.215.

The discovered vulnerability allows an attacker to cause a denial‑of‑service attack. A heap‑based buffer overflow occurs during HTTP‑header parsing, enabling unauthenticated remote attacker to corrupt heap memory and crash the device.

Vulnerability status: Confirmed by vendor

Date of vulnerability remediation: 26.02.2025

Recommendations:

  • Update to version v2.2.215 or higher

Additional information: Security advisory, Press release

Researcher: Nataliya Tlyapova, Denis Goryushev (Positive Technologies)

Identifiers:

CVE-2025-3712

BDU:2025-01810

Vendor:

ATEN INTERNATIONAL Co., Ltd.

Vulnerable product:

LCD KVM over IP switch CL5708IM

Vulnerable versions:

firmware version < v2.2.215