CVE-2026-7473
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Arista EOS Unexpected Tunnel Protocol Decapsulation and Forwarding Bypass
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
EOS
- Vendor
- Arista Networks
- Product
- EOS
- Platforms
- 7020R Series
- 7280R/R2 Series
- 7500R/R2 Series
- 7280R3 Series (Limited exposure: IP-in-IPv6 and GUEv6)
- 7500R3 Series (Limited exposure: IP-in-IPv6 and GUEv6)
- 7800R3 Series (Limited exposure: IP-in-IPv6 and GUEv6)
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.36.0 | affected | custom | Unavailable | Unavailable | None listed |
| 4.35.0 | affected | custom | Unavailable | 4.35 | None listed |
| 4.34.0 | affected | custom | Unavailable | 4.34 | None listed |
| 4.33.0 | affected | custom | Unavailable | 4.33 | None listed |
| 4.32.0 | affected | custom | Unavailable | 4.32 | None listed |
| 4.31.0 | affected | custom | Unavailable | 4.31 | None listed |
| * | affected | custom | Unavailable | 4.30 | None listed |