Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-45603

19
FAUCET Score

CVE-2021-45603 is a sensitive information disclosure vulnerability affecting numerous NETGEAR devices, including various routers and extenders. A flaw in the Universal Plug and Play (UPnP) implementation allows an attacker to retrieve a device's serial number, which can then be leveraged for a password reset. Rated as Medium severity (CVSS 5.5), the vulnerability requires local access and has a high impact on confidentiality, as it could lead to unauthorized access to the device. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1.66CPE matchmatch criteria
cpe:2.3:o:netgear:d7800_firmware:*:*:*:*:*:*:*:*
< 1.0.1.68CPE matchmatch criteria
cpe:2.3:o:netgear:ex2700_firmware:*:*:*:*:*:*:*:*
< 1.0.0.90CPE matchmatch criteria
cpe:2.3:o:netgear:wn3000rpv2_firmware:*:*:*:*:*:*:*:*
< 1.0.2.100CPE matchmatch criteria
cpe:2.3:o:netgear:wn3000rpv3_firmware:*:*:*:*:*:*:*:*
< 2.6.5.20CPE matchmatch criteria
cpe:2.3:o:netgear:lbr1020_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
1.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0058 is in the 94th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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

immersivelabs.com / resources/blog/netgear-vulnerabilities-could-put-small-business-routers-at-risk
Third Party Advisory
kb.netgear.com / 000064407/Security-Advisory-for-Post-Authentication-Command-Injection-Sensitive-Information-Disclosure-on-Multiple-Products-PSV-2021-0169-PSV-2021-0171
PatchVendor Advisory