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CVE-2026-73453

Security Advisory 0174 PUBLISHED

Description (CNA)

An unauthenticated P4Runtime (Programming Protocol-Independent Packet Processors Runtime) client can achieve arbitrary code execution under certain conditions on affected platforms running Arista EOS configured with P4Runtime. P4Runtime is disabled by default in Arista EOS. By crafting a malicious packet during the initiation of a P4Runtime session, an attacker can obtain complete administrative control over the compromised switch. This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.

Affected (CNA)

Vendor / productVersions
Arista Networks / EOSaffected 4.36.0F through 4.36.1F; affected 4.35.0F through 4.35.5M; affected 4.34.0F through 4.34.7M; affected 4.33.0F before 4.34.0F; affected 4.32.0F before 4.33.0F; affected 4.31.0F before 4.32.0F; affected 4.30.0F before 4.31.0F; affected 4.29.2F before 4.30.0F

CWE

CWE-94

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.