Alta Video -2062: Denial of service vulnerability in Go's crypto/x509 package versions before 1.25.5 and 1.24.11

Release Date

4th of February 2026.

Overview

A vulnerability was discovered in the Go``crypto/x509` package related to excessive resource consumption. Specifically, the HostnameError.Error() function did not limit the number of hosts printed, leading to quadratic runtime via repeated string concatenation when constructing an error string. As a result, a malicious actor could provide a certificate that caused excessive resource consumption.

Affected Products

• Alta Video:
  • All Stable upgrade channel versions before 8.0.9.
  • All Beta upgrade channel versions before 8.0.9.
• Avigilon Cloud-Native Cameras:
  • All Stable upgrade Channel versions before 8.0.9.
  • All Beta upgrade channel versions before 8.0.9.
• Alta Video Cloud: before  10th December 2025.

Unaffected Products

• Alta Video:

  • All Stable upgrade channel versions after and including 8.0.9.
  • All Beta upgrade channel versions after and including 8.0.9.

• Avigilon Cloud-Native Cameras:

  • All Stable upgrade channel versions after and including 8.0.9.
  • All Beta upgrade channel versions after and including 8.0.9.

• Alta Video Cloud: from  10th December 2025

Resolution

This issue has been fixed in Alta Video Beta upgrade channel version 8.0.9 and Stable upgrade channel version 8.0.9.

It is highly recommended that all installations running an affected version are upgraded to the latest release as soon as possible. Releases are available to download through the Alta Video User Interface.

A fix was deployed to the Alta Video Cloud on  10th December 2025. Alta Video Cloud customers do not need to take any additional action.

This issue has been fixed in Avigilon Cloud-Native Cameras Beta upgrade channel version 8.0.9 and Stable upgrade channel version 8.0.9.

It is highly recommended that all Avigilon Cloud-Native camera installations running an affected version upgrade to the latest release as soon as possible. Releases are available to download through the Alta Video User Interface for Avigilon Cloud-Native cameras and the Avigilon Cloud-Native Camera Interface for unmanaged cameras.

Vulnerability Information

• CVE: CVE-2025-61729
• CVSS score: 7.5 (High)
• CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Mitigations

There are no known mitigations for this issue.

Work arounds

There are no known work arounds for this issue.

Acknowledgements

Issue reported by the Go team.

Disclosure Timeline

• 02/12/2025 Issue found
• 03/12/2025 Root cause established
• 09/12/2025 Fix identified
• 10/12/2025 Patched Alta Video Cloud released
• 16/12/2025 Patched Alta Video (Beta upgrade channel) released
• 06/01/2026 Patched Alta Video (Stable upgrade channel) released
• 16/12/2025 Patched Avigilon Cloud-Native Cameras (Beta upgrade channel) released
• 06/01/2026 Patched Avigilon Cloud-Native Cameras (Stable upgrade channel) released
• 04/02/2026 Vulnerability publicly disclosed