Alta Video — 2199: Vulnerabilities in crypto/x509, crypto/tls, cmd/go, cmd/compile, and archive/tar in Go before before 1.26.2 and Go 1.25.9

Release Date

23rd of June 2026.

Overview

Multiple security vulnerabilities were discovered in Go versions prior to 1.26.2 and 1.25.9. These included a critical memory corruption vulnerability (CVE-2026-27143) within the compiler and an arbitrary code execution vulnerability (CVE-2026-27140) exploitable during build time. Several high-severity denial-of-service vulnerabilities were also identified, impacting TLS, certificate validation, and tar archive processing. Furthermore, a cross-site scripting vulnerability (CVE-2026-32289) and a symlink traversal issue (CVE-2026-32282) were present.

Affected Products

  • Alta Video:
    • All Stable upgrade channel versions before 8.1.10.
    • All Beta upgrade channel versions before 8.2.4.
  • Avigilon Cloud-Native Cameras:
    • All Stable upgrade Channel versions before 8.1.10.
    • All Beta upgrade channel versions before 8.2.4.
  • Alta Video Cloud: before  27th April 2026.

Unaffected Products

  • Alta Video:

    • All Stable upgrade channel versions after and including 8.1.10.
    • All Beta upgrade channel versions after and including 8.2.4.

  • Avigilon Cloud-Native Cameras:

    • All Stable upgrade channel versions after and including 8.1.10.
    • All Beta upgrade channel versions after and including 8.2.4.

  • Alta Video Cloud: from  27th April 2026

Resolution

This issue has been fixed in Alta Video Beta upgrade channel version 8.2.4 and Stable upgrade channel version 8.1.10.

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  27th April 2026. 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 8.2.4 and Stable upgrade channel version 8.1.10.

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-2026-27140, CVE-2026-27143, CVE-2026-27144, CVE-2026-32280, CVE-2026-32281, CVE-2026-32283, CVE-2026-32288, CVE-2026-32289, CVE-2026-33810.
  • CVSS score: 9.8 (Critical)
  • CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/AH

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

  • 07/04/2026 Issue found
  • 07/04/2026 Root cause established
  • 27/04/2026 Fix identified
  • 27/04/2026 Patched Alta Video Cloud released
  • 27/04/2026 Patched Alta Video (Beta upgrade channel) released
  • 30/04/2026 Patched Alta Video (Stable upgrade channel) released
  • 27/04/2026 Patched Avigilon Cloud-Native Cameras (Beta upgrade channel) released
  • 30/04/2026 Patched Avigilon Cloud-Native Cameras (Stable upgrade channel) released
  • 23/06/2026 Vulnerability publicly disclosed