CVE-2023-24047

Privilege escalation via weak DES credential hashing

Published Dec 4, 2023 · Updated Aug 2, 2024

Insufficiently protected credentials in Connectize AC21000 G6 Firmware 641.139.1.1256 let remote authenticated users recover root access via adjacent network. The router reuses the administrator password as the device root password and stores it, along with other credentials, as a rapidly crackable DES hash in /etc/passwd. Filesystem access is required to obtain the hash, after which password cracking can grant administrative and root control with confidentiality and integrity impact but no reported availability impact.

CVSS severity6.8
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficiently protected credentials in Connectize AC21000 G6 Firmware 641.139.1.1256 let remote authenticated users recover root access via adjacent network. The router reuses the administrator password as the device root password and stores it, along with other credentials, as a rapidly crackable DES hash in /etc/passwd. Filesystem access is required to obtain the hash, after which password cracking can grant administrative and root control with confidentiality and integrity impact but no reported availability impact.

The record

CVE
CVE-2023-24047
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
Connectize
Product
AC21000 G6 Firmware
Classifications
CWE-863, CWE-522, T1110.002
Attack vector
adjacent
Privileges
authenticated

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 vectoradjacent
Required privilegesauthenticated

What is affected?

Connectize · AC21000 G6 Firmwareversion=0 <=641.139.1.1256

Published CVSS scores

8.0CISA-ADPCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.8NISTCVSS:3.1/AV:A/AC:L/PR:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-522Insufficiently Protected Credentials
T1110.002Password Cracking

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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