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

published 2020-04-24 6 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13745

cvss: 6.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.9%; EPSS 0.9% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D7800 before 1.0.1.34, R6400v2 before 1.0.2.34, R6700 before 1.0.1.30, R6900 before 1.0.1.30, R6900P before 1.0.0.62, R7000 before 1.0.9.12, R7000P before 1.0.0.62, R7500v2 before 1.0.3.26, R7800 before 1.0.2.42, R9000 before 1.0.3.10, WNDR4300v2 before 1.0.0.50, and WNDR4500v3 before 1.0.0.50.

Patch / fix

fixed in 12

netgear d7800_firmware 1.0.1.34
netgear r6400_firmware 1.0.2.34
netgear r6700_firmware 1.0.1.30
netgear r6900_firmware 1.0.1.30
netgear r6900p_firmware 1.0.0.62
netgear r7000_firmware 1.0.9.12
netgear r7000p_firmware 1.0.0.62
netgear r7500_firmware 1.0.3.26
netgear r7800_firmware 1.0.2.42
netgear r9000_firmware 1.0.3.10
netgear wndr4300_firmware 1.0.0.50
netgear wndr4500_firmware 1.0.0.50

Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.8	CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:N
NVD	3.1	6.8	CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA	3.0	6.8	CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	5.2	AV:A/AC:L/Au:S/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 /000055109/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-Gateways-PSV-2017-0
vendor-advisory

Sources

CVE List CVE-2018-21227
NVD CVE-2018-21227

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