CVE-2023-51984Public exploitNetwork attack vector

Remote command execution via static-route shell injection

Published Jan 11, 2024 · Updated Jun 16, 2025

Command injection in D-Link DIR-822+ 1.0.2 allows remote attackers to execute arbitrary shell commands through a static-route request. SetStaticRouteSettings splits staticroute_list on commas, passes the data to sub_437028 without filtering, and invokes FCGI_popen, which calls popen on the constructed command. Network access to the HNAP endpoint is sufficient; successful injection executes commands with the router service's privileges and can expose or alter data or interrupt service.

CVSS severity9.8
Critical
EPSS probability2.02%
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-822+ 1.0.2 allows remote attackers to execute arbitrary shell commands through a static-route request. SetStaticRouteSettings splits staticroute_list on commas, passes the data to sub_437028 without filtering, and invokes FCGI_popen, which calls popen on the constructed command. Network access to the HNAP endpoint is sufficient; successful injection executes commands with the router service's privileges and can expose or alter data or interrupt service.

The record

CVE
CVE-2023-51984
Published
Jan 11, 2024
Updated
Jun 16, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 16, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
Privilegesunauthenticated
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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