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CVE-2021-45540

26
FAUCET Score

CVE-2021-45540 describes a command injection vulnerability in various NETGEAR router models, including the R7000, R7900, and RAX series, affecting versions prior to specific firmware updates. An authenticated attacker on the local network can exploit this flaw to execute arbitrary commands with high privileges. While rated with a high CVSS score of 8.4 due to its significant impact on confidentiality, integrity, and availability, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.4.2.84CPE matchmatch criteria
cpe:2.3:o:netgear:r7900p_firmware:*:*:*:*:*:*:*:*
< 1.4.2.84CPE matchmatch criteria
cpe:2.3:o:netgear:r7960p_firmware:*:*:*:*:*:*:*:*
< 1.0.4.74CPE matchmatch criteria
cpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:*
< 1.4.2.84CPE matchmatch criteria
cpe:2.3:o:netgear:r8000p_firmware:*:*:*:*:*:*:*:*
< 1.0.6.110CPE matchmatch criteria
cpe:2.3:o:netgear:mr60_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.4HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.7
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 56th percentile among its peer group of 49 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 Bluesky, 0.0 Mastodon, and 0.0 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 / 000064477/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0196
PatchVendor Advisory