CVE-2026-101155: Security Advisory 0189

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-06 · updated 2026-10-07
Weakness: CWE-22

Description

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.

Affected products

Arista Networks CloudVision Portal: from 2026.1.0 through 2026.1.2; from 2025.3.0 through 2025.3.3; from 2024.2.0 before 2025.3.0; 2026.2.0 — fixed in 2025.3.0

How to fix

Upgrade to a fixed version: Arista Networks CloudVision Portal 2025.3.0. Check the vendor advisory for mitigations.

References

https://www.arista.com/en/support/advisories-notices/security-advisory/24805-security-advisory-0189

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