CVE-2026-4466Public exploitNetwork attack vector

Authenticated command execution via unsanitized timestr parameter

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 via a crafted timestr value. In webmggnt's sub_41DBC0 routine, the timestr field is passed without validation to sprintf for command construction and then to system for execution. A valid management session cookie and high privileges are required; successful exploitation runs attacker-selected shell commands on the gateway.

CVSS severity4.7
Medium
EPSS probability4.07%
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 via a crafted timestr value. In webmggnt's sub_41DBC0 routine, the timestr field is passed without validation to sprintf for command construction and then to system for execution. A valid management session cookie and high privileges are required; successful exploitation runs attacker-selected shell commands on the gateway.

The record

CVE
CVE-2026-4466
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

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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')
T1059.004Command and Scripting Interpreter: Unix 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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