CVE-2022-36612Public exploit

Root account compromise via hard-coded password

Published Aug 28, 2022 · Updated Aug 3, 2024

Hard-coded credentials in TOTOLINK A950RG 4.1.2cu.5204_B20210112 allow local users to recover the root password from firmware. The /etc/shadow.sample file embeds a fixed hash for the root account, and the linked analysis demonstrates offline recovery of its plaintext password. Low-privileged local access to the firmware is required; the recovered credential permits root authentication and full control of the router.

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 A950RG 4.1.2cu.5204_B20210112 allow local users to recover the root password from firmware. The /etc/shadow.sample file embeds a fixed hash for the root account, and the linked analysis demonstrates offline recovery of its plaintext password. Low-privileged local access to the firmware is required; the recovered credential permits root authentication and full control of the router.

The record

CVE
CVE-2022-36612
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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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
T1552.001Unsecured 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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