CVE-2021-41503

Camera configuration compromise via exposed Basic credentials

Published Sep 24, 2021 · Updated Aug 4, 2024

Improper authentication in D-Link DCS-5000L 1.05 and DCS-932L 2.17 and earlier allows remote attackers to alter settings over the LAN. The command interface uses HTTP Basic authentication without HTTPS, exposing reusable credentials to remote attackers on the local network. Network access sufficient to observe authenticated traffic is required; recovered credentials permit device access and configuration changes.

CVSS severity8.0
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in D-Link DCS-5000L 1.05 and DCS-932L 2.17 and earlier allows remote attackers to alter settings over the LAN. The command interface uses HTTP Basic authentication without HTTPS, exposing reusable credentials to remote attackers on the local network. Network access sufficient to observe authenticated traffic is required; recovered credentials permit device access and configuration changes.

The record

CVE
CVE-2021-41503
Published
Sep 24, 2021
Updated
Aug 4, 2024
Vendor
D-Link
Product
DCS-5000L
Classifications
CWE-287, T1040, T1078
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=1.05

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

D-Link · DCS-5000Lversion=1.05
D-Link · DCS-932Lversion=0 <=2.17

Published CVSS scores

5.2NVDAV:A/AC:L/Au:S/C:P/I:P/A:P
8.0NVDCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.0CISA-ADPCVSS:3.1/AV:A/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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1040Network Sniffing
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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