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CVE-2021-45622

30
FAUCET Score

CVE-2021-45622 describes a critical command injection vulnerability affecting numerous NETGEAR devices, allowing an unauthenticated attacker to execute arbitrary commands. This flaw impacts a wide range of products including routers, extenders, and mesh systems, with specific firmware versions listed as vulnerable. With a CVSS score of 9.8 (Critical), the vulnerability is easily exploitable over the network with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been confirmed, and community discussion is minimal, the high risk score and broad product impact warrant immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.5.0.24CPE matchmatch criteria
cpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:*
< 4.6.3.6CPE matchmatch criteria
cpe:2.3:o:netgear:cbr750_firmware:*:*:*:*:*:*:*:*
< 1.0.0.58CPE matchmatch criteria
cpe:2.3:o:netgear:eax20_firmware:*:*:*:*:*:*:*:*
< 1.0.1.68CPE matchmatch criteria
cpe:2.3:o:netgear:eax80_firmware:*:*:*:*:*:*:*:*
< 1.0.0.74CPE matchmatch criteria
cpe:2.3:o:netgear:ex7500_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.37%
Probability of exploitation in next 30 days
EPSS Percentile
82.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0237 is in the 72nd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

kb.netgear.com / 000064509/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Routers-Extender-WiFi-Systems-PSV-2020-0506
Broken Link