What’s Vulnerable › Vulnerabilities

CVE-2018-19989

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-05-13 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• D-Link Dir-822 Firmware: 202krb06
• D-Link DIR-822: 3.10b06

References

• https://github.com/pr0v3rbs/CVE/tree/master/CVE-2018-19986%20-%2019990
• https://github.com/pr0v3rbs/CVE/tree/master/CVE-2018-19986%20-%2019990

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