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CVE-2021-45521

21
FAUCET Score

CVE-2021-45521 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 medium-severity vulnerability (CVSS 6.5) allows an unauthenticated attacker on the adjacent network to gain high confidentiality impact without user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

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

7.4HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.36%
Probability of exploitation in next 30 days
EPSS Percentile
28.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0036 is in the 42nd 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 / 000064161/Security-Advisory-for-Hardcoded-Password-on-Some-WiFi-Systems-PSV-2021-0045
PatchVendor Advisory