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CVE-2026-73454

8.1 HIGH

Published 2026-09-16 · Updated 2026-09-17

AI risk analysis

Summary
This flaw allows a specially crafted request to modify an account's properties, potentially granting unauthorized elevated privileges. It matters because it can lead to unauthorized access and privilege escalation without proper mitigation.
Exploitability
Exploitation requires gRPC Network Security Interface (gNSI) Credentialz to be configured and a specially crafted request. The attack is moderately difficult to execute, especially if the affected feature is not enabled or properly secured.
Blast radius
If exploited, the impact could be significant, as it may lead to unauthorized access and privilege escalation, affecting the security and integrity of the system.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Disable the gRPC Network Security Interface (gNSI) Credentialz feature or upgrade to the latest version of Arista EOS that addresses this vulnerability, specifically version 4.29.1 or later.
auth-bypasspriv-escalationnetworkgrpcaristaeos

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

On affected platforms running Arista EOS with gRPC Network Security Interface (gNSI) Credentialz configured, a specially crafted request can cause unintended modifications to the target account's properties. This may result in the account being assigned elevated privileges or access beyond what an administrator intended.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-77

References

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.