Certain NETGEAR devices are affected by command injection by an authenticated user.

published 2020-04-20 6 y ago modified 2026-06-17 4 mo ago also EUVD-2017-9942

cvss: 6.7; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits: 0; none known

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D8500 through 1.0.3.28, R6400 through 1.0.1.22, R6400v2 through 1.0.2.18, R8300 through 1.0.2.94, R8500 through 1.0.2.94, and R6100 through 1.0.1.12.

Patch / fix

fixed in 5

netgear d8500_firmware 1.0.3.28
netgear r6400_firmware 1.0.1.22, 1.0.2.18
netgear r8300_firmware 1.0.2.94
netgear r8500_firmware 1.0.2.94
netgear r6100_firmware 1.0.1.12

Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.7	CVSS:3.0/AC:L/AV:L/A:H/C:H/I:H/PR:H/S:U/UI:N
NVD	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA	3.0	6.7	CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

kb.netgear.com /000045850/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-Modem-Routers-PSV-2
vendor-advisory

Sources

CVE List CVE-2017-18851
NVD CVE-2017-18851

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary