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CVE-2018-21118

26
FAUCET Score

CVE-2018-21118 describes an authentication bypass vulnerability affecting NETGEAR XR500 devices running firmware versions prior to 2.3.2.32. This high-severity flaw, with a CVSS score of 8.8, allows an unauthenticated attacker on the local network to bypass authentication mechanisms, potentially leading to full compromise of the device (confidentiality, integrity, and availability). There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and the vulnerability shows no signs of active exploitation, with minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.3.2.32CPE matchmatch criteria
cpe:2.3:o:netgear:xr500_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.70%
Probability of exploitation in next 30 days
EPSS Percentile
49.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0070 is in the 53rd percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.2 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 / 000060240/Security-Advisory-for-Authentication-Bypass-on-XR500-PSV-2018-0324
Vendor Advisory