CVE-2021-25309

CRITICAL

Gigaset DX600A v41.00-175 - Weak Password Requirements and Brute-Force Vulnerability via Telnet Administrator Service

Title source: llm

Description

The telnet administrator service running on port 650 on Gigaset DX600A v41.00-175 devices does not implement any lockout or throttling functionality. This situation (together with the weak password policy that forces a 4-digit password) allows remote attackers to easily obtain administrative access via brute-force attacks.

References (1)

Core 1

Core References

Third Party Advisory x_refsource_misc

https://research.nccgroup.com/2021/02/28/technical-advisory-administrative-passcode-recovery-and-authenticated-remote-buffer-overflow-vulnerabilities-in-gigaset-dx600a-handset-cve-2021-25309-cve-2021-25306/

Scores

CVSS v3 9.8

EPSS 0.0135

EPSS Percentile 67.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-521 CWE-307

Status published

Products (1)

gigaset/dx600a_firmware v41.00-175

Published Mar 02, 2021

Tracked Since Feb 18, 2026