CVE-2026-73456
CVSS v3
10
CRITICAL
EPSS Score
0.7 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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.
Technical details
- Published
- 2026-09-16
- Last Modified
- 2026-09-17
Frequently asked questions
What is CVE-2026-73456?
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.
Is CVE-2026-73456 actively exploited?
Active exploitation of CVE-2026-73456 has not been confirmed. Its EPSS score was 0.7% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-73456?
CVE-2026-73456 has a CVSS v3 base score of 10 (CRITICAL severity).
Is CVE-2026-73456 affecting your environment?
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