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CVE-2021-45552

23
FAUCET Score

CVE-2021-45552 describes a command injection vulnerability in several NETGEAR router models, including the D7800, R7500v2, R7800, R8900, R9000, RAX120, and XR700, affecting specific firmware versions. This high-severity flaw (CVSS 7.2) allows an authenticated attacker to execute arbitrary commands on the device, leading to potential compromise of confidentiality, integrity, and availability. While the vulnerability is critical, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1.58CPE matchmatch criteria
cpe:2.3:o:netgear:d7800_firmware:*:*:*:*:*:*:*:*
< 1.0.3.48CPE matchmatch criteria
cpe:2.3:o:netgear:r7500v2_firmware:*:*:*:*:*:*:*:*
< 1.0.2.68CPE matchmatch criteria
cpe:2.3:o:netgear:r7800_firmware:*:*:*:*:*:*:*:*
< 1.0.5.2CPE matchmatch criteria
cpe:2.3:o:netgear:r8900_firmware:*:*:*:*:*:*:*:*
< 1.0.5.2CPE matchmatch criteria
cpe:2.3:o:netgear:r9000_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
0.8
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.22%
Probability of exploitation in next 30 days
EPSS Percentile
65.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0122 is in the 55th percentile among its peer group of 5,537 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 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 / 000064071/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-PSV-2019-0199
PatchVendor Advisory