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CVE-2021-38513

28
FAUCET Score

CVE-2021-38513 describes an authentication bypass vulnerability affecting various NETGEAR devices, including specific versions of Orbi, Nighthawk, and Mesh WiFi systems. This critical vulnerability (CVSS 9.8) allows unauthenticated attackers to bypass security measures over the network with low complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) or active exploitation has been observed, and community discussion is minimal, the high severity warrants immediate patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2.10.11CPE matchmatch criteria
cpe:2.3:o:netgear:rbk852_firmware:*:*:*:*:*:*:*:*
< 3.2.10.11CPE matchmatch criteria
cpe:2.3:o:netgear:rbr850_firmware:*:*:*:*:*:*:*:*
< 3.2.10.11CPE matchmatch criteria
cpe:2.3:o:netgear:rbs850_firmware:*:*:*:*:*:*:*:*
< 2.5.0.10CPE matchmatch criteria
cpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:*
< 1.0.0.48CPE matchmatch criteria
cpe:2.3:o:netgear:eax20_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:L

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.83%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0183 is in the 65th percentile among its peer group of 36,862 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 / 000063777/Security-Advisory-for-Authentication-Bypass-on-Some-Extenders-and-WiFi-Systems-PSV-2020-0008
Vendor Advisory