CVE-2021-41503: DCS-5000L v1.05 and DCS-932L v2.17 and older are affecged by Incorrect Acess Control

Q: How do I fix CVE-2021-41503?

dcs-932l firmware: upgrade to newer than 2.17; dcs-5000l firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2021-41503 being exploited?

CVE-2021-41503 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-41503 affect?

CVE-2021-41503 affects dcs-932l firmware, dcs-5000l firmware. Severity is high (CVSS 8.0). DCS-5000L v1.05 and DCS-932L v2.17 and older are affecged by Incorrect Acess Control. The use of the basic authentication for the devices command interface allows attack vectors that may compromise the cameras configuration and allow malici

Routine

HIGH 8.0UPGRADEMITIGATE

CVE-2021-41503 is a high-severity flaw (CVSS 8.0) affecting dcs-932l firmware, dcs-5000l firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DCS-5000L v1.05 and DCS-932L v2.17 and older are affecged by Incorrect Acess Control. The use of the basic authentication for the devices command interface allows attack vectors that may compromise the cameras configuration and allow malicious users on the LAN to access the device. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.0 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-287
Published	2021-09-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: d-link · dlink

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-09-24 20:15 UTCPublished CVE record published
2026-06-17 04:08 UTCUpdated Record last modified

dlink dcs-932l firmware UPGRADE

Affected: <= 2.17

Fixed in: newer than 2.17

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

d-link dcs-5000l firmware MITIGATE

Affected: 1.05

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.05

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-41503?

dcs-932l firmware: upgrade to newer than 2.17; dcs-5000l firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-41503 being exploited?

CVE-2021-41503 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-41503 affect?

CVE-2021-41503 affects dcs-932l firmware, dcs-5000l firmware. Severity is high (CVSS 8.0). DCS-5000L v1.05 and DCS-932L v2.17 and older are affecged by Incorrect Acess Control. The use of the basic authentication for the devices command interface allows attack vectors that may compromise the cameras configuration and allow malici

How urgent is CVE-2021-41503?

Priority 38/100. High severity

Software pages

D-Link vulnerabilities

Related CVEs

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CVE-2025-4842 HIGH 8.8 MITIGATE A vulnerability was found in D-Link DCS-932L 2.18.01
CVE-2025-4841 HIGH 8.8 MITIGATE A vulnerability was found in D-Link DCS-932L 2.18.01 and classified as critical
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References

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