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CVE-2021-45620

30
FAUCET Score

CVE-2021-45620 describes a critical command injection vulnerability impacting numerous NETGEAR devices, including various routers and mesh WiFi systems. An unauthenticated attacker can exploit this flaw remotely, allowing for complete compromise of the affected device. With a CVSS score of 9.8 (Critical), this vulnerability poses a significant risk due to its ease of exploitation and potential for high impact on confidentiality, integrity, and availability. While there is currently no public exploit code or evidence of active exploitation, the broad range of affected products necessitates immediate patching to mitigate potential threats.

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:*:*:*:*:*:*:*:*
< 1.1.6.28CPE matchmatch criteria
cpe:2.3:o:netgear:lax20_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
2.02%
Probability of exploitation in next 30 days
EPSS Percentile
78.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0202 is in the 68th 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 / 000064510/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-Routers-Extenders-and-WiFi-Systems-PSV-2020-0509
Vendor Advisory