CVE-2023-33782Public exploitNetwork attack vector

Root command execution via iperf3 injection

Published Jun 7, 2023 · Updated Jul 9, 2026

Command injection in D-Link DIR-842V2 v1.0.3 allows remote authenticated users to execute arbitrary commands via the iperf3 diagnostics function. The management SOAP API's iperf3 diagnostics handler passes an unsanitized user-supplied string to a system call, enabling root-context execution. Network access to the router's management interface and valid credentials are required; successful exploitation can compromise confidentiality, integrity, and availability.

CVSS severity8.8
High
EPSS probability36.64%
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-842V2 v1.0.3 allows remote authenticated users to execute arbitrary commands via the iperf3 diagnostics function. The management SOAP API's iperf3 diagnostics handler passes an unsanitized user-supplied string to a system call, enabling root-context execution. Network access to the router's management interface and valid credentials are required; successful exploitation can compromise confidentiality, integrity, and availability.

The record

CVE
CVE-2023-33782
Published
Jun 7, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-77, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/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 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-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

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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