CVE-2024-34921Public exploit

Unauthenticated command execution via unsanitized VPN process ID

Published May 13, 2024 · Updated Feb 13, 2025

OS command injection in TOTOLINK X5000R firmware 9.1.0cu.2350_B20230313 allows remote attackers to execute arbitrary commands. disconnectVPN reads the pid request value, interpolates it unquoted into a kill command with snprintf, and sends the result to CsteSystem; a semicolon introduces another shell command. Exploitation requires network adjacency but no authentication or user interaction, and successful input executes attacker-chosen commands on the router.

CVSS severity8.8
High
EPSS probability9.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in TOTOLINK X5000R firmware 9.1.0cu.2350_B20230313 allows remote attackers to execute arbitrary commands. disconnectVPN reads the pid request value, interpolates it unquoted into a kill command with snprintf, and sends the result to CsteSystem; a semicolon introduces another shell command. Exploitation requires network adjacency but no authentication or user interaction, and successful input executes attacker-chosen commands on the router.

The record

CVE
CVE-2024-34921
Published
May 13, 2024
Updated
Feb 13, 2025
Vendor
TOTOLINK
Product
TOTOLINK X5000R Firmware
Classifications
CWE-78, T1059.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=9.1.0cu.2350_b20230313

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TOTOLINK · TOTOLINK X5000R Firmwareversion=9.1.0cu.2350_b20230313

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

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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