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CVE-2021-45643

21
FAUCET Score

CVE-2021-45643 is a medium-severity vulnerability affecting specific NETGEAR router models (R6400v2, R6700v3, and XR1000) due to incorrect security settings. This vulnerability allows an unauthenticated attacker on the adjacent network to achieve high integrity impact without user interaction. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.4.118CPE matchmatch criteria
cpe:2.3:o:netgear:r6400v2_firmware:*:*:*:*:*:*:*:*
< 1.0.4.118CPE matchmatch criteria
cpe:2.3:o:netgear:r6700v3_firmware:*:*:*:*:*:*:*:*
< 1.0.0.58CPE matchmatch criteria
cpe:2.3:o:netgear:xr1000_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.2HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 59th percentile among its peer group of 1,802 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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 / 000064159/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-PSV-2021-0035
PatchVendor Advisory