CVE-2022-44249Network attack vector

Unauthenticated command execution via firmware filename

Published Nov 23, 2022 · Updated Apr 25, 2025

OS command injection in TOTOLINK NR1800X 9.1.0u.6279_B20210910 allows remote attackers to execute commands via a crafted firmware filename. The UploadFirmwareFile function incorporates the attacker-controlled FileName value into an operating-system command without neutralizing command syntax. Network access to the firmware-upload handler is sufficient; successful injection executes commands in the router firmware context and can read, alter, or interrupt device operations.

CVSS severity9.8
Critical
EPSS probability1.83%
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 NR1800X 9.1.0u.6279_B20210910 allows remote attackers to execute commands via a crafted firmware filename. The UploadFirmwareFile function incorporates the attacker-controlled FileName value into an operating-system command without neutralizing command syntax. Network access to the firmware-upload handler is sufficient; successful injection executes commands in the router firmware context and can read, alter, or interrupt device operations.

The record

CVE
CVE-2022-44249
Published
Nov 23, 2022
Updated
Apr 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 23, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 25, 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

9.8NIST NVDCVSS: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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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