CVE-2025-10123Public exploitNetwork attack vector

Unauthenticated command execution via filtered Hostname injection

Published Sep 9, 2025 · Updated Sep 9, 2025

Command injection in D-Link DIR-823X 250416 and earlier allows remote attackers to execute arbitrary commands through a crafted Hostname. The unauthenticated /goform/set_static_leases handler applies an incomplete dangerous-character filter before concatenating Hostname into a shell command. A crafted POST request requires no login and can run commands with the router process's privileges, enabling shell access and device compromise.

CVSS severity9.8
Critical
EPSS probability4.74%
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 DIR-823X 250416 and earlier allows remote attackers to execute arbitrary commands through a crafted Hostname. The unauthenticated /goform/set_static_leases handler applies an incomplete dangerous-character filter before concatenating Hostname into a shell command. A crafted POST request requires no login and can run commands with the router process's privileges, enabling shell access and device compromise.

The record

CVE
CVE-2025-10123
Published
Sep 9, 2025
Updated
Sep 9, 2025
Vendor
D-Link
Product
DIR-823X
Classifications
CWE-74, CWE-77, T1059, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=250416

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · DIR-823Xversion=250416

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/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 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-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter
T1190Exploit Public-Facing Application

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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