CVE-2026-73456

critical · 9.2

Under certain circumstances on affected platforms running Arista EOS with gRPC Network Packet Sampling Interface (gNPSI) enabled, an unauthenticated gNPSI client can craft a malicious request to allow arbitrary code execution, granting an attacker full administrative control over the compromised switch.

9.2

CVSS

0.7%

EPSS (exploit prob.)

53rd

EPSS percentile

2026-09-16

Published

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-94

References

https://www.arista.com/en/support/advisories-notices/security-advisory/24714-security-advisory-0158

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-73456