CRITICAL

CVE-2019-6258

CVSS v3

9.8

CRITICAL

EPSS Score

2.6 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2019-6258 yet.

Full record on NVD

Description

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.

Technical details

Published: 2020-08-18

Frequently asked questions

What is CVE-2019-6258?

Is CVE-2019-6258 actively exploited?

Active exploitation of CVE-2019-6258 has not been confirmed. Its EPSS score was 2.6% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-6258?

CVE-2019-6258 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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