Exposure of Resource to Wrong Sphere in Arista Extensible Operating System (EOS) - CVE-2026-52898
Published: June 24, 2026
Vulnerability identifier: #VU135098
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-52898
CWE-ID: CWE-668
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Arista Networks
Affected software:
Arista Extensible Operating System (EOS)
Arista Extensible Operating System (EOS)
Detailed vulnerability description
The vulnerability allows a remote user to disclose unintended data.
The vulnerability exists due to exposure of resource to wrong sphere in the Streaming Telemetry Agent (TerminAttr) when processing a specifically designed sequence of packets. A remote user can send a specifically designed sequence of packets to disclose unintended data.
The agent must be configured to stream to CloudVision and run with the -cveapimode=queued flag.
How to mitigate CVE-2026-52898
Install security update from vendor's website.