Alta Video — 2123: Vulnerability in pion/dtls risked leaking the authentication key

Release Date

7th of April 2026.

Overview

A vulnerability was discovered in the pion/dtls Go package, relating to the use of random nonce generation with AES GCM ciphers. This vulnerability makes it easier for remote attackers to obtain the authentication key. By leveraging the reuse of a nonce in a session, attackers can spoof data via a "forbidden attack".

Affected Products

• Alta Video:
  • All Stable upgrade channel versions before 8.1.5.
  • All Beta upgrade channel versions before 8.1.3.
• Avigilon Cloud-Native Cameras:
  • All Stable upgrade Channel versions before 8.1.5.
  • All Beta upgrade channel versions before 8.1.3.
• Alta Video Cloud: before  DDth Month YYYY.

Unaffected Products

• Alta Video:

  • All Stable upgrade channel versions after and including 8.1.5.
  • All Beta upgrade channel versions after and including 8.1.3.

• Avigilon Cloud-Native Cameras:

  • All Stable upgrade channel versions after and including 8.1.5.
  • All Beta upgrade channel versions after and including 8.1.3.

• Alta Video Cloud: from  DDth Month YYYY

Resolution

This issue has been fixed in Alta Video Beta upgrade channel version 8.1.3 and Stable upgrade channel version 8.1.5.

It is strongly 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.

This issue has been fixed in Avigilon Cloud-Native Cameras Beta upgrade channel version 8.1.3 and Stable upgrade channel version 8.1.5.

It is strongly 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-2026-26014
• CVSS score: 5.9 (Medium)
• CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigations

There are no known mitigations for this issue.

Work arounds

There are no known work arounds for this issue.

Acknowledgements

Issue reported by project maintainers.

Disclosure Timeline

• 16/02/2026 Issue found
• 17/02/2026 Root cause established
• 19/02/2026 Fix identified
• 27/02/2026 Patched Alta Video (Beta upgrade channel) released
• 19/03/2026 Patched Alta Video (Stable upgrade channel) released
• 27/02/2026 Patched Avigilon Cloud-Native Cameras (Beta upgrade channel) released
• 19/03/2026 Patched Avigilon Cloud-Native Cameras (Stable upgrade channel) released
• 07/04/2026 Vulnerability publicly disclosed