What is CVE-2019-25249?

CVE-2019-25249 is a critical-severity vulnerability in Devolo Ag Dlan 550 Duo+ Starter Kit, classified under Incorrect Privilege Assignment. CVSS score: 9.8/10. Published 2025-12-24.

How severe is CVE-2019-25249?

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

Privilege escalation in Devolo Ag Dlan 550 Duo+ Starter Kit

CVE-2019-25249

devolo dLAN 500 AV Wireless+ 3.1.0-1 contains an authentication bypass vulnerability that allows attackers to enable hidden services through the htmlmgr CGI script. Attackers can enable telnet and remote shell services, reboot the device, and gain root access without a password by manipulating system configuration parameters.

EPSS: 0.004 (30.7th 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

Devolo Ag Dlan 550 Duo+ Starter Kit — versions 500 AV Wireless+ 3.1.0-1

Weakness classification (CWE)

CWE-266 — Incorrect Privilege Assignment

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2019-25249?: CVE-2019-25249 is a critical-severity vulnerability in Devolo Ag Dlan 550 Duo+ Starter Kit, classified under Incorrect Privilege Assignment. CVSS score: 9.8/10. Published 2025-12-24.
How severe is CVE-2019-25249?: Critical severity. CVSS v3 base score is 9.8 out of 10.