CVE-2019-6258 json
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…
published 2020-08-18 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-15824
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
2.62% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/pr0v3rbs/CVE/tree/master/CVE-2019-6258 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
supportannouncement.us.dlink.com
/announcement/publication.aspx?name=SAP10175
patch, vendor-advisory
-
github.com
/pr0v3rbs/CVE/tree/master/CVE-2019-6258
exploit, third-party-advisory
Sources
- CVE List CVE-2019-6258
- NVD CVE-2019-6258
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