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CVE-2021-45526

27
FAUCET Score

CVE-2021-45526 describes a buffer overflow vulnerability affecting numerous NETGEAR router models, including the R7000, R8000, and RAX80, among others. An authenticated attacker can exploit this flaw over the network with low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. While the vulnerability is rated with a CVSS score of 8.8 (High), there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.0.38CPE matchmatch criteria
cpe:2.3:o:netgear:ex6000_firmware:*:*:*:*:*:*:*:*
< 1.0.0.48CPE matchmatch criteria
cpe:2.3:o:netgear:ex6120_firmware:*:*:*:*:*:*:*:*
< 1.0.0.30CPE matchmatch criteria
cpe:2.3:o:netgear:ex6130_firmware:*:*:*:*:*:*:*:*
< 1.0.4.52CPE matchmatch criteria
cpe:2.3:o:netgear:r6300v2_firmware:*:*:*:*:*:*:*:*
< 1.0.1.52CPE matchmatch criteria
cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.3HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
1.5
Impact Score
5.3
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 25th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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 0.1 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 / 000064446/Security-Advisory-for-Post-Authentication-Buffer-Overflow-on-Some-Routers-and-Extenders-PSV-2019-0078
PatchVendor Advisory