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-2021-34983

20
FAUCET Score

CVE-2021-34983 is an information disclosure vulnerability affecting multiple NETGEAR routers, specifically within the httpd service on TCP port 80. This flaw allows network-adjacent attackers to access sensitive system configuration information, including stored credentials, without requiring authentication. Rated 6.5 MEDIUM on CVSS, its low attack complexity and lack of authentication make it easily exploitable for high confidentiality impact. Despite its potential, there is no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.0.64CPE matchmatch criteria
cpe:2.3:o:netgear:xr1000_firmware:*:*:*:*:*:*:*:*
< 1.0.3.68CPE matchmatch criteria
cpe:2.3:o:netgear:xr300_firmware:*:*:*:*:*:*:*:*
< 1.0.0.76CPE matchmatch criteria
cpe:2.3:o:netgear:d6220_firmware:*:*:*:*:*:*:*:*
< 1.0.0.108CPE matchmatch criteria
cpe:2.3:o:netgear:d6400_firmware:*:*:*:*:*:*:*:*
< 1.0.0.76CPE matchmatch criteria
cpe:2.3:o:netgear:d7000v2_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 38th 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 / 000064313/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Extenders-Routers-and-DSL-Modem-Routers-PSV-2021-0159
Vendor Advisory
zerodayinitiative.com / advisories/ZDI-21-1275
Third Party Advisory