CVE-2023-43284Public exploitNetwork attack vector

Authenticated code execution via QoS command injection

Published Oct 5, 2023 · Updated Sep 19, 2024

Command injection in D-Link DIR-846 firmware 100A53DBR-Retail allows remote authenticated users to execute arbitrary code via QoS requests. The SetSmartQoSSettings handler passes the smartqos_priority_devices value containing shell substitution syntax into command processing without neutralizing it. Access requires valid router credentials; successful exploitation runs attacker-selected commands on the appliance and can read or alter its data and configuration.

CVSS severity8.8
High
EPSS probability1.95%
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-846 firmware 100A53DBR-Retail allows remote authenticated users to execute arbitrary code via QoS requests. The SetSmartQoSSettings handler passes the smartqos_priority_devices value containing shell substitution syntax into command processing without neutralizing it. Access requires valid router credentials; successful exploitation runs attacker-selected commands on the appliance and can read or alter its data and configuration.

The record

CVE
CVE-2023-43284
Published
Oct 5, 2023
Updated
Sep 19, 2024
Vendor
D-Link
Product
DIR-846
Classifications
T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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=100a53dbr

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

D-Link · DIR-846version=100a53dbr

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS: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.

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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

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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