CVE-2022-29645Public exploitNetwork attack vector

Root access via recoverable hard-coded password

Published May 18, 2022 · Updated Aug 3, 2024

Hard-coded credentials in TOTOLINK A3100R firmware 4.1.2cu.5050_B20200504 and 4.1.2cu.5247_B20211129 allow attackers to gain root access. The /etc/shadow.sample file embeds a recoverable password for the root account, and firmware analysis recovered the shared value. Exploitation requires an authentication service that accepts the root credential; public evidence does not identify that service.

CVSS severity9.8
Critical
EPSS probability1.45%
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 A3100R firmware 4.1.2cu.5050_B20200504 and 4.1.2cu.5247_B20211129 allow attackers to gain root access. The /etc/shadow.sample file embeds a recoverable password for the root account, and firmware analysis recovered the shared value. Exploitation requires an authentication service that accepts the root credential; public evidence does not identify that service.

The record

CVE
CVE-2022-29645
Published
May 18, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1078.001, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1078.001Valid Accounts: Default Accounts
T1552.001Unsecured Credentials: Credentials In Files

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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