Security readout for executives and security teams
Plain-English summary
This flaw can temporarily disrupt Axis door controllers and intercom door-control functions when handling OSDP communications. The reported impact is operational: doors may not open or close while the relevant process is unavailable. Sources state no sensitive data is extracted and the device is not further compromised.
Executive priority
Treat this as a moderate physical security availability risk. It is most urgent where affected devices control critical entrances, high-sensitivity areas, or emergency access paths. The main business concern is operational disruption, not data exposure.
Technical view
CVE-2023-21405 is an OSDP message parser denial-of-service in selected Axis Network Door Controllers and Network Video Door Stations. The pacsiod process can crash, causing high availability impact. CVSS 3.1 is 6.5 with adjacent attack vector, no privileges, no user interaction, and no confidentiality or integrity impact.
Likely exposure
Exposure is likely limited to organizations using the listed Axis access-control products on affected AXIS OS versions, especially where OSDP communication is in use. This is not described as internet-reachable; the CVSS vector indicates adjacent-network access is required.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. The known impact is temporary denial of door-controlling functionality, not data theft, persistence, or broader device compromise.
Researcher notes
Evidence supports an availability-only DoS tied to OSDP parsing and pacsiod crashes. CWE mappings are CWE-1286 and CWE-754. The bundle does not provide exploit details, fixed versions, or proof of exploitation beyond the vendor advisory reference.
Mitigation direction
- Identify affected Axis door controllers and intercoms in physical access-control environments.
- Compare each device model and AXIS OS version against the affected version list.
- Review the Axis advisory for product-specific mitigation and fixed software guidance.
- Prioritize remediation for doors supporting critical areas or emergency operations.
- Prepare manual access procedures for sites that cannot remediate immediately.
Validation and detection
- Inventory Axis A1001, A1210-B, A1601, A1610, A8207-VE, and A8207-VE Mk II devices.
- Confirm whether OSDP communication is enabled or operationally required.
- Check AXIS OS versions against the CVE affected ranges.
- Review device or access-control logs for pacsiod crashes or temporary door-control outages.
- Validate remediation status against the Axis security advisory, not assumptions.
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-1286: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCWE-754: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2023-21405 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:N/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.axis.com/dam/public/7f/3a/ed/cve-2023-21405-en-US-407244.pdfCVE reference
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.