CVE-2023-44809Network attack vector

Unauthenticated arbitrary code execution

Published Oct 16, 2023 · Updated Sep 16, 2024

Improper privilege management in D-Link DIR-820L firmware 1.05B03 allows remote attackers to execute arbitrary code over the network. The public records do not identify the affected interface, missing permission check, or operation that grants unintended privileges. No authentication or user interaction is required, and exploitation can compromise the router's confidentiality, integrity, and availability.

CVSS severity9.8
Critical
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in D-Link DIR-820L firmware 1.05B03 allows remote attackers to execute arbitrary code over the network. The public records do not identify the affected interface, missing permission check, or operation that grants unintended privileges. No authentication or user interaction is required, and exploitation can compromise the router's confidentiality, integrity, and availability.

The record

CVE
CVE-2023-44809
Published
Oct 16, 2023
Updated
Sep 16, 2024
Vendor
D-Link
Product
D-Link DIR-820L
Classifications
CWE-269, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=1.05b03

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

D-Link · D-Link DIR-820Lversion=1.05b03

Published CVSS scores

9.8NVDCVSS: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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