Security readout for executives and security teams
Plain-English summary
This CVE affects older, unsupported D-Link network cameras. A malicious user already on the local network could abuse weak access control around the command interface to view or change camera configuration. The business concern is legacy surveillance equipment becoming an internal foothold or losing trustworthy configuration control.
Executive priority
Treat confirmed affected cameras as high-priority legacy risk. The issue requires internal network proximity, but affected devices are unsupported and could compromise surveillance configuration. Replacement or strict isolation is the practical priority.
Technical view
CVE-2021-41503 is an incorrect access control issue tied to basic authentication on the command interface of D-Link DCS-5000L v1.05 and DCS-932L v2.17 and older. CVSS 3.1 is 8.0 with adjacent-network access, low privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where these legacy D-Link camera models remain on an internal LAN, especially shared office, guest, facilities, or IoT networks. The CVE note says affected products are no longer supported by the maintainer.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The attack context is local or adjacent network access with low privileges, not unauthenticated internet exploitation according to the supplied CVSS vector.
Researcher notes
The source bundle names affected models in the description, while structured affected vendor/product fields are n/a. No patch details, proof of exploitation, or KEV status are provided. Analysis should stay scoped to DCS-5000L v1.05 and DCS-932L v2.17 and older.
Mitigation direction
- Inventory for DCS-5000L and DCS-932L models and affected firmware versions.
- Check D-Link SAP10247 and security bulletin guidance for supported remediation or replacement direction.
- Retire or replace unsupported affected cameras where feasible.
- Restrict camera management access to trusted admin networks only.
- Remove affected cameras from shared LANs, guest networks, and sensitive segments.
Validation and detection
- Confirm exact camera model and firmware version from asset records or management interfaces.
- Verify affected cameras are not reachable from guest, user, or internet-facing networks.
- Review camera configuration for unauthorized changes or unexpected accounts.
- Confirm replacement, isolation, or vendor-directed remediation is documented.
- Track unsupported devices as exceptions until removed from production.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-41503 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dlink.com/en/security-bulletin/CVE reference · x_refsource_MISC
- https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10247CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.