What is CVE-2026-101155?

CVE-2026-101155 is a critical-severity vulnerability in Arista Networks Cloudvision Portal, classified under Path Traversal. CVSS score: 9.1/10. Published 2026-10-06.

How severe is CVE-2026-101155?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Path Traversal in Arista Networks Cloudvision Portal

CVE-2026-101155

An authenticated remote attacker with specific permissions can read or write files on the platform filesystem beyond the intended scope through specially crafted requests and/or crafted file uploads to the Software Management Studio Software Repository.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2026-10-06 · last modified 2026-10-07.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Arista Networks Cloudvision Portal — versions 2026.2.0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

www.arista.com/en/support/advisories-notices/security-advisory/24805-security-a… (vendor-advisory)

Frequently asked questions

What is CVE-2026-101155?: CVE-2026-101155 is a critical-severity vulnerability in Arista Networks Cloudvision Portal, classified under Path Traversal. CVSS score: 9.1/10. Published 2026-10-06.
How severe is CVE-2026-101155?: Critical severity. CVSS v3 base score is 9.1 out of 10.