CVE-2019-6258

Name: CVE-2019-6258
Creator: NVD / NIST
Published: 2020-08-18T17:15:11.283+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.62%

Last modified Jun 17, 2026

CVE-2019-6258 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.62% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.62%

83.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
D-Link	Dir-822 Firmware	<= 2.02krb06

References

https://github.com/pr0v3rbs/CVE/tree/master/CVE-2019-6258Exploit, Third Party Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10175Patch, Vendor Advisory
https://github.com/pr0v3rbs/CVE/tree/master/CVE-2019-6258Exploit, Third Party Advisory
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10175Patch, Vendor Advisory

Timeline

Published: Aug 18, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6258?

How severe is CVE-2019-6258?

CVE-2019-6258 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.62% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6258?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-6258?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST