What is CVE-2021-25309?

CVE-2021-25309 is a critical-severity vulnerability in Gigaset Dx600a, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.8/10. Published 2021-03-02.

How severe is CVE-2021-25309?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Gigaset Dx600a

CVE-2021-25309

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.

EPSS: 0.013 (68.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gigaset Dx600a
Gigaset Dx600a_firmware — versions v41.00-175
N/a — versions n/a

Weakness classification (CWE)

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-25309?: CVE-2021-25309 is a critical-severity vulnerability in Gigaset Dx600a, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.8/10. Published 2021-03-02.
How severe is CVE-2021-25309?: Critical severity. CVSS v3 base score is 9.8 out of 10.