CVE-2023-24048Public exploitNetwork attack vector

Router takeover via tokenless forged admin requests

Published Dec 4, 2023 · Updated Aug 2, 2024

Cross-site request forgery in Connectize AC21000 G6 firmware 641.139.1.1256 and earlier allows attackers to alter router settings via a browser. The admin panel accepts a GET to /man_password.htm as sufficient workflow state, then honors a forged password-change POST without session cookies or CSRF tokens. Exploitation requires a logged-in administrator to visit an attacker-controlled site and can replace the administrator password, enabling control of the router.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Connectize AC21000 G6 firmware 641.139.1.1256 and earlier allows attackers to alter router settings via a browser. The admin panel accepts a GET to /man_password.htm as sufficient workflow state, then honors a forged password-change POST without session cookies or CSRF tokens. Exploitation requires a logged-in administrator to visit an attacker-controlled site and can replace the administrator password, enabling control of the router.

The record

CVE
CVE-2023-24048
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
Connectize
Product
AC21000 G6 Firmware
Classifications
CWE-352, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Connectize · AC21000 G6 Firmwareversion=0 <=641.139.1.1256

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5NCC GroupCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:A/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1189Drive-by Compromise

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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