CVE-2023-24049

Administrative access via unchanged default passwords

Published Dec 4, 2023 · Updated May 29, 2025

Default credentials in Connectize AC21000 G6 firmware 641.139.1.1256 and earlier allow attackers to gain admin access over Wi-Fi. The factory Wi-Fi password is admin, setup permits the wizard to be skipped without changing it, and the same credential opens the configuration panel. Reachability requires access to either Wi-Fi band and unchanged defaults; successful use grants complete router administration.

CVSS severity9.8
Critical
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Default credentials in Connectize AC21000 G6 firmware 641.139.1.1256 and earlier allow attackers to gain admin access over Wi-Fi. The factory Wi-Fi password is admin, setup permits the wizard to be skipped without changing it, and the same credential opens the configuration panel. Reachability requires access to either Wi-Fi band and unchanged defaults; successful use grants complete router administration.

The record

CVE
CVE-2023-24049
Published
Dec 4, 2023
Updated
May 29, 2025
Vendor
Connectize
Product
AC21000 G6 Firmware
Classifications
CWE-1393, CWE-521, T1078.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. May 29, 2025Record 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=0 <=641.139.1.1256

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Connectize · AC21000 G6 Firmwareversion=0 <=641.139.1.1256

Published CVSS scores

4.6Fox-ITCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1393Use of Default Password
CWE-521Weak Password Requirements
T1078.001Valid Accounts: Default Accounts

Public exploit references

No public exploit references are available in this record.

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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