CVE-2026-73463 Security Advisory 0169

On affected platforms running Arista EOS, when multiple gRPC Network Security Interface gNSI transports are configured, a race condition in the gNSI Authz service may cause a policy rotation to fail silently. An authenticated user whose access was revoked by the new policy may retain unauthorized...

CVE-2026-73463: Concurrent Execution using Shared Resource with Improper Synchronization

On affected platforms running Arista EOS, when multiple gRPC Network Security Interface gNSI transports are configured, a race condition in the gNSI Authz service may cause a policy rotation to fail silently. An authenticated user whose access was revoked by the new policy may retain unauthorized...

Security Advisory 0169

Security Advisory 0169 . CSAF PDF Date: September 9, 2026 Revision | Date | Changes ---|---|--- 1.0 | September 9, 2026 | Initial release 1.1 | September 22, 2026 | CSAF JSON file added The CVE-ID tracking this issue: CVE-2026-73463 CVSSv3.1 Base Score: 5.3...