CVE-2025-29041Public exploitNetwork attack vector

Root command execution via newline injection

Published Apr 17, 2025 · Updated May 1, 2025

OS command injection in D-Link DIR-823X firmware 240802 allows remote authenticated users to execute commands as root via HTTP. The /goform/diag_nslookup handler applies an incomplete character filter to target_addr, allowing newline-delimited commands to reach the system shell. The published proof of concept first logs into the management interface, so valid administrative credentials and network access to that interface are required.

CVSS severity9.8
Critical
EPSS probability1.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

OS command injection in D-Link DIR-823X firmware 240802 allows remote authenticated users to execute commands as root via HTTP. The /goform/diag_nslookup handler applies an incomplete character filter to target_addr, allowing newline-delimited commands to reach the system shell. The published proof of concept first logs into the management interface, so valid administrative credentials and network access to that interface are required.

The record

CVE
CVE-2025-29041
Published
Apr 17, 2025
Updated
May 1, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 17, 2025CVE publishedPublication date reported by the CVE source.
  2. May 1, 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 privilegesauthenticated

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

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.

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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')
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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