CVE-2025-13184Public exploitNetwork attack vector

Unauthenticated root command execution via pre-auth Telnet handler

Published Dec 10, 2025 · Updated Dec 10, 2025

Authentication bypass in TOTOLINK X5000R before 9.1.0u.6369_B20230113 allows remote attackers to gain a root shell over Telnet. The cstecgi.cgi dispatcher handles action=telnet before loginAuth and accepts a date-derived code plus an empty NVRAM Telnet key. Reachability requires access to the HTTP management interface, and the factory-reset blank Telnet credential grants full configuration and filesystem control.

CVSS severity9.8
Critical
EPSS probability11.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in TOTOLINK X5000R before 9.1.0u.6369_B20230113 allows remote attackers to gain a root shell over Telnet. The cstecgi.cgi dispatcher handles action=telnet before loginAuth and accepts a date-derived code plus an empty NVRAM Telnet key. Reachability requires access to the HTTP management interface, and the factory-reset blank Telnet credential grants full configuration and filesystem control.

The record

CVE
CVE-2025-13184
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
TOTOLINK
Product
X5000R
Classifications
CWE-863, CWE-306, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V9.1.0u.6369_B20230113

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TOTOLINK · X5000Rversion=0 <V9.1.0u.6369_B20230113

Published CVSS scores

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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-306Missing Authentication for Critical Function
T1210Exploitation of Remote Services

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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