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CVE-2018-21144

22
FAUCET Score

CVE-2018-21144 describes a stack-based buffer overflow vulnerability affecting several NETGEAR router models, including the DM200, R7500, and WNDR series, in specific firmware versions. This flaw can be exploited by an authenticated user on the adjacent network. With a CVSS score of 6.8 (Medium), the vulnerability has high impacts on confidentiality, integrity, and availability, but requires high privileges for exploitation. 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
< 1.0.0.52CPE matchmatch criteria
cpe:2.3:o:netgear:dm200_firmware:*:*:*:*:*:*:*:*
< 1.0.0.122CPE matchmatch criteria
cpe:2.3:o:netgear:r7500_firmware:*:*:*:*:*:*:*:*
< 1.0.2.42CPE matchmatch criteria
cpe:2.3:o:netgear:r7800_firmware:*:*:*:*:*:*:*:*
< 1.0.3.10CPE matchmatch criteria
cpe:2.3:o:netgear:r8900_firmware:*:*:*:*:*:*:*:*
< 1.0.3.16CPE matchmatch criteria
cpe:2.3:o:netgear:r9000_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.8MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.51%
Probability of exploitation in next 30 days
EPSS Percentile
40.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0051 is in the 29th percentile among its peer group of 399 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 / 000059489/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-3166
Vendor Advisory