Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.

published 2021-12-26 4y ago modified 2026-06-17 4mo ago also EUVD-2021-32381

cvss: 9.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000P before 1.4.2.84, R8300 before 1.0.2.154, R8500 before 1.0.2.154, RBK752 before 3.2.17.12, RBR750 before 3.2.17.12, RBS750 before 3.2.17.12, RBK852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

Patch / fix

fixed in 13

netgear cbr40_firmware 2.5.0.24
netgear cbr750_firmware 4.6.3.6
netgear r7900p_firmware 1.4.2.84
netgear r7960p_firmware 1.4.2.84
netgear r8000p_firmware 1.4.2.84
netgear r8300_firmware 1.0.2.154
netgear r8500_firmware 1.0.2.154
netgear rbk752_firmware 3.2.17.12
netgear rbk852_firmware 3.2.17.12
netgear rbr750_firmware 3.2.17.12
netgear rbr850_firmware 3.2.17.12
netgear rbs750_firmware 3.2.17.12
netgear rbs850_firmware 3.2.17.12

Is CVE-2021-45615 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

1.00% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.6	CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:C/UI:N
CNA	3.1	9.6	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	5.8	AV:A/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-77 Improper Neutralization of Special Elements used in a Command

References

kb.netgear.com /000064514/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-202
vendor-advisory

Sources

CVE List CVE-2021-45615
NVD CVE-2021-45615

Fencer Intel 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.