CVE-2026-7473

On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface—is present, the switch will incorrectly decapsulate and forward other unexpected tunneled packet with a destination IP matching its configured decapsulation IP. This occurs because the switch does not verify the tunnel protocol type, potentially leading to the unexpected processing of non-configured tunnel traffic. This issue has been reported as being exploited in the wild. It has a CVSS v3.1 base score of 5.8 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

CVE-2026-7473 has a CVSS v3.1 score of 5.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0084, placing it in the 1th percentile for exploitation probability.

CVE-2026-7473 affects products from arista, specifically: 7020sr-24c2, 7020sr-32c2, 7020srg-24c2, 7020tr-48, 7020tra-48, 7280cr-48, 7280cr2-60, 7280cr2a-30, 7280cr2a-60, 7280cr2k-30, 7280cr2k-60, 7280cr2m-30, 7280cr3-32d4, 7280cr3-32p4, 7280cr3-36s, 7280cr3-96, 7280cr3a-24d12, 7280cr3a-48d6, 7280cr3a-72, 7280cr3ak-24d12, 7280cr3ak-48d6, 7280cr3ak-72, 7280cr3am-24d12, 7280cr3am-48d6, 7280cr3am-72, 7280cr3mk-32d4s, 7280cr3mk-32p4s, 7280dr3-24, 7280dr3a-36, 7280dr3a-54, 7280dr3ak-36, 7280dr3ak-54, 7280dr3am-36, 7280dr3am-54, 7280pr3-24, 7280qr-c36, 7280qr-c36-m, 7280qr-c72, 7280qra-c36s, 7280qra-c36sm, 7280sr-48c6, 7280sr2-48yc6, 7280sr2-48yc6-m, 7280sr2a-48yc6, 7280sr2a-48yc6-m, 7280sr2k-48c6-m, 7280sr3-40yc6, 7280sr3-48yc8, 7280sr3m-48yc8, 7280sra-48c6, 7280sra-48c6-m, 7280sram-48c6, 7280srm-40cx2, 7280tr-48c6, 7280tr3-40c6, 7280tra-48c6, 7280tra-48c6-m, 7289r3a-sc, 7289r3ak-sc, 7289r3am-sc, 7500r-36cq-lc, 7500r-36q-lc, 7500r-48s2cq-lc, 7500r-8cfpx-lc, 7500r2-36cq-lc, 7500r2a-36cq-lc, 7500r2ak-36cq-lc, 7500r2ak-48ycq-lc, 7500r2am-36cq-lc, 7500r2m-36cq-lc, 7500r3-24d, 7500r3-24p, 7500r3-36cq, 7500r3k-36cq, 7500r3k-48y4d, 7500rm-36cq-lc, 7504r-fm, 7504r3, 7508r-fm, 7508r3, 7512r-fm, 7512r3, 7516-sup2, 7516n-ch, 7516r-fm, 7800r3-36d, 7800r3-48cq, 7800r3a-36d, 7800r3a-36dm, 7800r3a-36p, 7800r3a-36pm, 7800r3ak-36dm, 7800r3ak-36pm, 7800r3k-48cq, 7800r3k-48cqms, 7800r3k-72y, 7804r3, 7808r3, 7812r3, 7816lr3, 7816r3, eos. Check the affected products table above for specific version ranges.

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