CVE-2022-36611Public exploit

Local root access via recoverable hard-coded password

Published Aug 28, 2022 · Updated Aug 3, 2024

Hard-coded credentials in TOTOLINK A800R firmware 4.1.2cu.5137_B20200730 allow local users to obtain the root password. The firmware stores a fixed root credential in /etc/shadow.sample, and the public disclosure demonstrates recovery of the embedded password. Low-privileged local access is required; the recovered credential enables root-account authentication and full control of the device.

CVSS severity7.8
High
EPSS probability0.30%
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 A800R firmware 4.1.2cu.5137_B20200730 allow local users to obtain the root password. The firmware stores a fixed root credential in /etc/shadow.sample, and the public disclosure demonstrates recovery of the embedded password. Low-privileged local access is required; the recovered credential enables root-account authentication and full control of the device.

The record

CVE
CVE-2022-36611
Published
Aug 28, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 28, 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 vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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 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
T1552.001Credentials 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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