CVE-2024-1661Public exploit

Root password recovery via embedded shadow hash

Published Feb 20, 2024 · Updated Aug 28, 2024

Hard-coded credentials in TOTOLINK X6000R 9.4.0cu.852_B20230719 allow local users to recover the root password from firmware. The firmware image stores a fixed MD5-crypt root-password hash in /etc/shadow, and the published procedure extracts that file and brute-forces the hash. Exploitation requires access to the firmware image and offline password cracking; published evidence demonstrates neither remote login nor code execution.

CVSS severity5.5
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in TOTOLINK X6000R 9.4.0cu.852_B20230719 allow local users to recover the root password from firmware. The firmware image stores a fixed MD5-crypt root-password hash in /etc/shadow, and the published procedure extracts that file and brute-forces the hash. Exploitation requires access to the firmware image and offline password cracking; published evidence demonstrates neither remote login nor code execution.

The record

CVE
CVE-2024-1661
Published
Feb 20, 2024
Updated
Aug 28, 2024
Vendor
TOTOLINK
Product
X6000R
Classifications
CWE-798, T1003.008
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=9.4.0cu.852_B20230719

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

TOTOLINK · X6000Rversion=9.4.0cu.852_B20230719
TOTOLINK · X6000R Firmwareversion=9.4.0cu.852_b20230719

Published CVSS scores

2.5VulDBCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
1.0VulDBAV:L/AC:H/Au:S/C:P/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.5VulDBCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1003.008OS Credential Dumping: /etc/passwd and /etc/shadow

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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