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CVE-2021-45520

26
FAUCET Score

CVE-2021-45520 describes a hardcoded password vulnerability impacting specific NETGEAR Orbi mesh WiFi systems, including the RBK352, RBR350, and RBS350, in firmware versions prior to 4.4.0.10. This flaw carries a high CVSS score of 8.8, indicating that an unauthenticated attacker on the adjacent network can achieve full compromise of confidentiality, integrity, and availability without user interaction. While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.4.0.10CPE matchmatch criteria
cpe:2.3:o:netgear:rbk352_firmware:*:*:*:*:*:*:*:*
< 4.4.0.10CPE matchmatch criteria
cpe:2.3:o:netgear:rbr350_firmware:*:*:*:*:*:*:*:*
< 4.4.0.10CPE matchmatch criteria
cpe:2.3:o:netgear:rbs350_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
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 31st percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 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 / 000064151/Security-Advisory-for-Hardcoded-Password-on-Some-WiFi-Systems-PSV-2021-0012
PatchVendor Advisory