CVE search · CVE-2026-7473
CVE-2026-7473
medium 6.9 Known exploited
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.
Details
- Status
- Analyzed
- Published
- Last changed
- Source
- psirt@arista.com
- Weakness
- CWE-1023
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 4.0 | medium 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
psirt@arista.comSecondary |
| CVSS 3.1 | medium 5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
psirt@arista.comSecondary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- arista · eos
References
- https://www.arista.com/en/support/advisories-notices/security-advisory/22872-security-advisory-0137Broken Link
- https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137MitigationVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7473US Government Resource