CVE-2022-48113Public exploitNetwork attack vector

Root shell access via hard-coded telnet credentials

Published Feb 2, 2023 · Updated Mar 26, 2025

Hard-coded credentials in TOTOLINK N200RE_v5 firmware 9.3.5u.6139 allow remote attackers to obtain root shell access over telnet. The web management handler accepts a crafted unauthenticated POST request that starts the telnet service, whose root account uses embedded credentials. Network reachability to the management interface is sufficient, and successful exploitation grants full command execution with root privileges.

CVSS severity9.8
Critical
EPSS probability0.94%
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 N200RE_v5 firmware 9.3.5u.6139 allow remote attackers to obtain root shell access over telnet. The web management handler accepts a crafted unauthenticated POST request that starts the telnet service, whose root account uses embedded credentials. Network reachability to the management interface is sufficient, and successful exploitation grants full command execution with root privileges.

The record

CVE
CVE-2022-48113
Published
Feb 2, 2023
Updated
Mar 26, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1078, T1059.008
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2025Record 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

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1078Valid Accounts
T1059.008Network Device CLI

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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