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CVE-2017-18840

21
FAUCET Score

CVE-2017-18840 describes a denial-of-service vulnerability affecting various NETGEAR M4300 and M4200 series switches running firmware versions prior to 12.0.2.15. This flaw, categorized as a medium severity issue with a CVSS score of 6.2, allows an unauthenticated attacker with local network access to disrupt device operations. While the attack complexity is low, the primary impact is a high availability loss, with no confidentiality or integrity concerns. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 12.0.2.15CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-28g_firmware:*:*:*:*:*:*:*:*
< 12.0.2.15CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-52g_firmware:*:*:*:*:*:*:*:*
< 12.0.2.15CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-28g-poe\+_firmware:*:*:*:*:*:*:*:*
< 12.0.2.15CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-52g-poe\+_firmware:*:*:*:*:*:*:*:*
< 12.0.2.15CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-8x8f_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.2MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.5
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
21.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 28th percentile among its peer group of 3,050 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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 / 000049022/Security-Advisory-for-Denial-of-Service-Vulnerability-on-Some-Fully-Managed-Switches-PSV-2017-2005
Vendor Advisory