CVE-2026-2168Public exploitNetwork attack vector

Authenticated root command execution via unsanitized FOTA URL

Published Feb 8, 2026 · Updated Feb 8, 2026

Command injection in D-Link DWR-M921 1.1.50 allows remote authenticated users to execute arbitrary commands through the FOTA web endpoint. The sub_419920 handler accepts an fota_url containing an allowed scheme, interpolates it with sprintf into a shell command, and passes the result to system() without neutralizing shell metacharacters. Access requires an authenticated web session, and injected commands execute with root privileges on the router.

CVSS severity8.8
High
EPSS probability3.38%
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 D-Link DWR-M921 1.1.50 allows remote authenticated users to execute arbitrary commands through the FOTA web endpoint. The sub_419920 handler accepts an fota_url containing an allowed scheme, interpolates it with sprintf into a shell command, and passes the result to system() without neutralizing shell metacharacters. Access requires an authenticated web session, and injected commands execute with root privileges on the router.

The record

CVE
CVE-2026-2168
Published
Feb 8, 2026
Updated
Feb 8, 2026
Vendor
D-Link
Product
DWR-M921
Classifications
CWE-77, CWE-74, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 8, 2026Record 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=1.1.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DWR-M921version=1.1.50

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.004Command and Scripting Interpreter: Unix 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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