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CVE-2017-18858

32
FAUCET Score

CVE-2017-18858 is a critical command execution vulnerability affecting multiple NETGEAR M4200 and M4300 series switches running firmware version 12.0.2.11 and earlier. This flaw allows an unauthenticated attacker to execute arbitrary commands on the affected devices remotely, without user interaction. With a CVSS score of 9.8 (Critical), the vulnerability poses a significant risk, enabling complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code available in Metasploit or ExploitDB, the vulnerability has garnered notable community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
<= 12.0.2.11CPE matchmatch criteria
cpe:2.3:o:netgear:m4200-10mg-poe\+_firmware:*:*:*:*:*:*:*:*
<= 12.0.2.11CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-28g_firmware:*:*:*:*:*:*:*:*
<= 12.0.2.11CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-52g_firmware:*:*:*:*:*:*:*:*
<= 12.0.2.11CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-28g-poe\+_firmware:*:*:*:*:*:*:*:*
<= 12.0.2.11CPE matchmatch criteria
cpe:2.3:o:netgear:m4300-52g-poe\+_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.15%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0315 is in the 78th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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 / 000038655/Security-Advisory-for-Unauthenticated-Remote-Code-Execution-on-M4200-and-M4300-PSV-2017-1971
Vendor Advisory