CVE-2026-73456CWE-94code-injection

CVE-2026-73456

Critical · published September 16, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
52.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
9.2 · 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
EPSS
0.00695 · 52.5th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-09-16T23:17Z
References (1)
https://www.arista.com/en/support/advisories-notices/security-advisory/24714-security-advisory-0158 · [email protected]
EPSS history
Timeline
  • 18 SEP 04:01Z
    EPSS moved — → 1%
    epss
  • 16 SEP 18:54Z
    Under certain circumstances, an unauthenticated gNPSI client can craft a malicious request to allow arbitrary code execution, granting an attacker full administrative control over the compromised switch.
    cvelistv5