{"id":"CVE-2026-73456","title":"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 a…","summary":"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 a…","severity":"critical","cvss":10,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-94"],"vendor":"Arista Networks","product":"EOS","affected":["EOS >= 4.36.0 <= 4.36.1F","EOS >= 4.35.0 <= 4.35.5M","EOS >= 4.34.2F <= 4.34.7M"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T12:18:25.887","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73456","references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24714-security-advisory-0158","label":"psirt@arista.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-17T03:57:34.132493Z"},"ingestedAt":"2026-09-16T19:02:30.722Z","epss":0.00746,"epssPercentile":0.52885,"slug":"CVE-2026-73456","body":"## Overview\n\nUnder 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":55,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}