CVE-2025-29043Public exploitNetwork attack vector

Root command execution via newline filter bypass

Published Apr 17, 2025 · Updated Apr 18, 2025

OS command injection in D-Link DIR-823X firmware 240802 allows remote authenticated users to execute arbitrary commands as root. The diag_traceroute handler passes the target_addr value into an operating-system command after a character filter that permits newline separators. The published proof requires a valid web-management login, despite the record's unauthenticated rating, and demonstrates creation of a root-owned file.

CVSS severity9.8
Critical
EPSS probability1.80%
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 firmware 240802 allows remote authenticated users to execute arbitrary commands as root. The diag_traceroute handler passes the target_addr value into an operating-system command after a character filter that permits newline separators. The published proof requires a valid web-management login, despite the record's unauthenticated rating, and demonstrates creation of a root-owned file.

The record

CVE
CVE-2025-29043
Published
Apr 17, 2025
Updated
Apr 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 18, 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 privilegesUnavailable in this record.

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.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command 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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