RCE in D-Link Dir-823g Firmware

CVE-2018-17787

On D-Link DIR-823G devices, the GoAhead configuration allows /HNAP1 Command Injection via shell metacharacters in the POST data, because this data is sent directly to the "system" library function.

Vulnerability class: Command Injection (OS Command Injection)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.037 (89.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-17787: held from 0.037 to 0.037.

EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-17787?
CVE-2018-17787 is a critical-severity vulnerability in D-Link Dir-823g Firmware, classified under OS Command Injection. CVSS score: 9.8/10. Published 2018-10-02.
How severe is CVE-2018-17787?
Critical severity. CVSS v3 base score is 9.8 out of 10.