CVE-2019-6258

9.8 criticalEPSS 2.6%

D-Link DIR-822 Rev.Bx devices with firmware v.202KRb06 and older allow a buffer overflow via long MacAddress data in a /HNAP1/SetClientInfo HNAP protocol message, which is mishandled in /usr/sbin/udhcpd during reading of the /var/servd/LAN-1-udhcpd.conf file.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 2.6% chance of exploitation in the next 30 days; higher than 85% of CVEs (scores of 2026-10-31)
CWE: CWE-120
Published: 2020-08-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

d-link:dir-822_firmware

References

https://github.com/pr0v3rbs/CVE/tree/master/CVE-2019-6258
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10175
https://github.com/pr0v3rbs/CVE/tree/master/CVE-2019-6258
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10175

Check your stack JSON