CVE-2026-73454

Security Advisory 0165

HIGH

8.1

CVSS Score

Published: September 16, 2026 at 08:14 AM UTC

Updated: September 17, 2026 at 04:18 AM UTC

1 product affected across 1 vendorArista EOS

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Severity

HIGH8.1

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Arista EOS · Arista Networks

60%

4.30.0F ≤ v < 4.31.0F4.31.0F ≤ v < 4.32.0F4.32.0F ≤ v < 4.33.0F4.33.0F ≤ v ≤ 4.33.8M4.34.0F ≤ v ≤ 4.34.7M4.35.0F ≤ v ≤ 4.35.5M4.36.0F ≤ v ≤ 4.36.0.1F4.30.0F 4.31.0F 4.32.0F 4.33.0F 4.34.0F 4.35.0F 4.36.0F

Affected range stops below 4.31.0F, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.32.0F, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.33.0F, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.arista.com/en/support/advisories-notices/security-advisory/24721-security-advisory-0165

References (1)

Vendor Advisory

Source: cverecord

https://www.arista.com/en/support/advisories-notices/security-advisory/24721-security-advisory-0165

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHArista

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-77

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