Risk Letters

Exploited vulnerability

CVE-2026-7473

TLP:CLEAR

Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

Arista Extensible Operating System (EOS) contains an incomplete comparison with missing factors vulnerability when the switch incorrectly decapsulate and forwards other unexpected tunneled packet with a destination IP matching its configured decapsulation IP.

Facts

  • Vendor: Arista
  • Product: Extensible Operating System
  • CVSS: 6.9
  • EPSS (probability of exploitation within 30 days): 1.1 %
  • On CISA's Known Exploited Vulnerabilities list since: 9 June 2026
  • First known exploitation: 9 June 2026
  • CISA's deadline for US federal agencies: 23 June 2026
  • Weakness: CWE-1023
  • First seen by Risk Letters: 9 June 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD