CVE-2022-40475Public exploitNetwork attack vector

Unauthenticated command execution via unsanitized GET data

Published Sep 29, 2022 · Updated May 21, 2025

Command injection in TOTOLINK A860R firmware 4.1.2cu.5182_B20201027 allows remote attackers to execute OS commands via downloadFile.cgi. The handler splits GET-derived path data, interpolates the resulting values into an echo command with sprintf, and passes that command directly to system without neutralizing shell metacharacters. No authentication or user interaction is required, and successful exploitation grants command execution in the router firmware context.

CVSS severity9.8
Critical
EPSS probability3.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in TOTOLINK A860R firmware 4.1.2cu.5182_B20201027 allows remote attackers to execute OS commands via downloadFile.cgi. The handler splits GET-derived path data, interpolates the resulting values into an echo command with sprintf, and passes that command directly to system without neutralizing shell metacharacters. No authentication or user interaction is required, and successful exploitation grants command execution in the router firmware context.

The record

CVE
CVE-2022-40475
Published
Sep 29, 2022
Updated
May 21, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2022CVE publishedPublication date reported by the CVE source.
  2. May 21, 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

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS: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-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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