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CVE-2018-19989

CRITICAL

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.

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

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: NONE Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products (2)

Vendor Product Version
d-link dir-822_firmware 202krb06
dlink dir-822_firmware 3.10b06

GitHub Security Advisory GHSA-62vf-2f7p-wwr4

In the /HNAP1/SetQoSSettings message, the uplink parameter is vulnerable, and the vulnerability...

Risk Scores

CVSS Score 9.8 / 10
EPSS Score 5.54%

Top 8% most likely to be exploited

Threat Score 40.9 / 100

Data Sources

NVD EPSS GitHub