CVE-2026-1544Public exploitNetwork attack vector

Authenticated command execution via unsanitized lan_gateway

Published Jan 28, 2026 · Updated Jan 28, 2026

OS command injection in D-Link DIR-823X 250416 allows remote authenticated users to execute arbitrary commands through set_mode. The sub_41E2A0 handler passes the lan_gateway value into a DHCP configuration shell command without neutralizing newline delimiters. Administrative credentials and network access to the management interface are required; successful exploitation runs commands in the router firmware context and can fully compromise the device.

CVSS severity6.3
Medium
EPSS probability3.48%
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 D-Link DIR-823X 250416 allows remote authenticated users to execute arbitrary commands through set_mode. The sub_41E2A0 handler passes the lan_gateway value into a DHCP configuration shell command without neutralizing newline delimiters. Administrative credentials and network access to the management interface are required; successful exploitation runs commands in the router firmware context and can fully compromise the device.

The record

CVE
CVE-2026-1544
Published
Jan 28, 2026
Updated
Jan 28, 2026
Vendor
D-Link
Product
DIR-823X
Classifications
CWE-78, CWE-77, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 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=250416

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DIR-823Xversion=250416

Published CVSS scores

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
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
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

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('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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