CVE-2024-51023Public exploit

Unauthenticated command execution via HNAP Address injection

Published Nov 5, 2024 · Updated Nov 5, 2024

OS command injection in D-Link DIR-823G 1.0.2B05 allows remote attackers to execute arbitrary commands through a crafted HNAP request. SetNetworkTomographySettings stores an untrusted Address value that GetNetworkTomographyResult inserts into a ping command passed to system without neutralizing shell metacharacters. The HNAP interface is reachable without authentication from an adjacent network, and successful exploitation grants command execution on the router.

CVSS severity8.8
High
EPSS probability1.46%
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-823G 1.0.2B05 allows remote attackers to execute arbitrary commands through a crafted HNAP request. SetNetworkTomographySettings stores an untrusted Address value that GetNetworkTomographyResult inserts into a ping command passed to system without neutralizing shell metacharacters. The HNAP interface is reachable without authentication from an adjacent network, and successful exploitation grants command execution on the router.

The record

CVE
CVE-2024-51023
Published
Nov 5, 2024
Updated
Nov 5, 2024
Vendor
D-Link
Product
DIR-823G
Classifications
CWE-78, CAPEC-88, T1059.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 5, 2024Record 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=1.0.2b05

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

D-Link · DIR-823Gversion=1.0.2b05

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS 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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