CVE-2018-21162

highpriority · track · 40EPSS 0.034 · 89 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

3.44% (89th) EPSS

CVSS 7.5 · high

Is it mine?

17 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D6400 before 1.0.0.78, EX6200 before 1.0.3.86, EX7000 before 1.0.0.64, R6250 before 1.0.4.8, R6300v2 before 1.0.4.6, R6400 before 1.0.1.12, R6700 before 1.0.1.16, R7000 before 1.0.7.10, R7100LG before 1.0.0.42, R7300DST before 1.0.0.44, R7900 before 1.0.1.12, R8000 before 1.0.3.36, R8300 before 1.0.2.74, R8500 before 1.0.2.74, WNDR3400v3 before 1.0.1.14, and WNR3500Lv2 before 1.2.0.48.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.08.8highCVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:Nsecondary · ENISA EU

v3.08.8highCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · cve@mitre.org USexploitability 2.8 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimary

affected products (17)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
netgear d6400 firmware< 1.0.0.78nvdUScpe:2.3:o:netgear:d6400_firmware:*:*:*:*:*:*:*:*
netgear ex6200 firmware< 1.0.3.86nvdUScpe:2.3:o:netgear:ex6200_firmware:*:*:*:*:*:*:*:*
netgear ex7000 firmware< 1.0.0.64nvdUScpe:2.3:o:netgear:ex7000_firmware:*:*:*:*:*:*:*:*
netgear r6250 firmware< 1.0.4.8nvdUScpe:2.3:o:netgear:r6250_firmware:*:*:*:*:*:*:*:*
netgear r6300 firmware< 1.0.4.6nvdUScpe:2.3:o:netgear:r6300_firmware:*:*:*:*:*:*:*:*
netgear r6400 firmware< 1.0.1.12nvdUScpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:*
netgear r6700 firmware< 1.0.1.16nvdUScpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
netgear r7000 firmware< 1.0.7.10nvdUScpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:*
netgear r7100lg firmware< 1.0.0.42nvdUScpe:2.3:o:netgear:r7100lg_firmware:*:*:*:*:*:*:*:*
netgear r7300dst firmware< 1.0.0.44nvdUScpe:2.3:o:netgear:r7300dst_firmware:*:*:*:*:*:*:*:*
netgear r7900 firmware< 1.0.1.12nvdUScpe:2.3:o:netgear:r7900_firmware:*:*:*:*:*:*:*:*
netgear r8000 firmware< 1.0.3.36nvdUScpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:*
netgear r8300 firmware< 1.0.2.74nvdUScpe:2.3:o:netgear:r8300_firmware:*:*:*:*:*:*:*:*
netgear r8500 firmware< 1.0.2.74nvdUScpe:2.3:o:netgear:r8500_firmware:*:*:*:*:*:*:*:*
netgear wndr3400 firmware< 1.0.1.14nvdUScpe:2.3:o:netgear:wndr3400_firmware:*:*:*:*:*:*:*:*
netgear wnr3500l firmware< 1.2.0.48nvdUScpe:2.3:o:netgear:wnr3500l_firmware:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-04-23modified 2026-06-17

related (7,947)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-106931US	—OT critical	2.53% (85th)	KEV	2026-10-14
SiteGuard Server Edition contains an OS command injection vulnerability, which may allow an attacker to execute arbitrary OS commands with root or SYSTEM privileges on the system r…
CVE-2026-110447US	critical9.8OT critical	11.6% (96th)	KEV	2026-10-14
Collabora Online Built-in CODE Server before 26.4.303 (richdocumentscode), a Nextcloud app, allows remote code execution, as exploited in the wild in September and October 2026, a…
CVE-2026-105134US	critical10.0OT critical	81.8% (100th)	KEV	2026-10-04
A flaw has been found in Ahsay AhsayCBS up to 9.15.2.69/10.3.4.44. This vulnerability affects unknown code of the file /rps/api/json/UpdateReceivers.do of the component Replication…
CVE-2026-83549US	—OT critical	9.89% (96th)	KEV	2026-09-01
Post-authentication Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability has been identified in the SMA1000 Appliance Management…
CVE-2026-74233US	critical9.8OT critical	3.37% (89th)	—	2026-08-27
Zbtlink WE1326, WE357, WE5926, WE5926-WD, WE826-Q, WE826-T2, WE826-WD, WG108, and WG3526 firmware 19.1101, Zbtlink WE2426-C firmware 19.1112, Zbtlink WE5926-EC_QP firmware 20.0516,…

+7942 more

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan