Is CVE-2018-19989 actively exploited?

No active exploitation of CVE-2018-19989 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-19989 be exploited remotely?

Yes. CVE-2018-19989 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-19989?

CVE-2018-19989 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2018-19989

CRITICAL

CVE-2018-19989

CWE-78Published: May 13, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

In the /HNAP1/SetQoSSettings message, the uplink parameter is vulnerable, and the vulnerability affects D-Link DIR-822 Rev.B 202KRb06 and DIR-822 Rev.C 3.10B06 devices. In the SetQoSSettings.php source code, the uplink parameter is saved in the /bwc/entry:1/bandwidth and /bwc/entry:2/bandwidth internal configuration memory without any regex checking. And in the bwc_tc_spq_start, bwc_tc_wfq_start, and bwc_tc_adb_start functions of the bwcsvcs.php source code, the data in /bwc/entry:1/bandwidth and /bwc/entry:2/bandwidth is used with the tc command without any regex checking. A vulnerable /HNAP1/SetQoSSettings XML message could have shell metacharacters in the uplink element such as the `telnetd` string.

NVD Source

Technical Analysis

CVE-2018-19989 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.