CVE-2026-4467Public exploitNetwork attack vector

Authenticated command execution via unvalidated MAC field

Published Mar 20, 2026 · Updated Mar 20, 2026

Command injection in COMFAST CF-AC100 2.6.0.8 allows remote authenticated users to execute arbitrary commands through an HTTP request. The webmggnt sub_41781C routine passes an unvalidated mac field through sprintf into a command string and invokes system. Administrative access and a valid session cookie are required; successful exploitation runs attacker-supplied commands on the gateway.

CVSS severity4.7
Medium
EPSS probability3.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in COMFAST CF-AC100 2.6.0.8 allows remote authenticated users to execute arbitrary commands through an HTTP request. The webmggnt sub_41781C routine passes an unvalidated mac field through sprintf into a command string and invokes system. Administrative access and a valid session cookie are required; successful exploitation runs attacker-supplied commands on the gateway.

The record

CVE
CVE-2026-4467
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
COMFAST
Product
CF-AC100
Classifications
CWE-77, CWE-74, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

COMFAST · CF-AC100version=2.6.0.8

Published CVSS scores

4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
2.0VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.8VulDBAV:N/AC:L/Au:M/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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