# CVE-2026-13409: Axis VAPIX API denial of service in dynamicoverlay.cgi

Source: https://junglewise.ai/threats/cve-2026-13409-the-vapix-api-dynamicoverlay-cgi-which-results-in-a-denial-of  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-13409 · Severity: medium · CVSS 4.3 · Published 2026-11-10

Axis VAPIX API is used to manage video overlay functionality on Axis network cameras and video encoders. An authenticated attacker with operator or admin privileges can send a specially crafted request to the dynamicoverlay.cgi endpoint, disabling the overlay feature and potentially affecting video monitoring and security workflows that depend on overlaid information like timestamps or alerts.

Vendors: [Axis](https://junglewise.ai/threats/vendors/axis).

## Quick answers

**Is CVE-2026-13409 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-13409 being exploited in the wild.

**How severe is CVE-2026-13409?** Medium severity, with a CVSS score of 4.3, published 10 November 2026.

**Which products and versions are affected?** Axis VAPIX API <UNKNOWN>.

**Is there a fix for CVE-2026-13409?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-13409 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-13409?** Check whether you run Axis VAPIX API at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The dynamicoverlay.cgi endpoint in the VAPIX API fails to properly validate input, allowing an authenticated attacker with operator or admin-level service account credentials to trigger a denial-of-service condition affecting the overlay functionality. The vulnerability requires prior authentication, mitigating the attack surface. An attacker who achieves this access can disable or degrade overlay rendering, impacting visual security monitoring.

## Affected products

- Axis VAPIX API <UNKNOWN>

## Timeline

- 2026-11-10: disclosed

## References

- [https://www.axis.com/dam/public/ef/b3/81/cve-2026-13409pdf-en-US-561255.pdf](https://www.axis.com/dam/public/ef/b3/81/cve-2026-13409pdf-en-US-561255.pdf)

## Related threats

- [Axis VAPIX API improper input validation in parameter handling](https://junglewise.ai/threats/cve-2026-4757-axis-vapix-api-improper-input-validation-in-parameter-handling)