CVE-2026-7473
Last modified
CVE-2026-7473 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 0.84% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
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
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Arista | Eos | All versions |
References
- https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137Mitigation, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7473US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-7473?
How severe is CVE-2026-7473?
How do I fix CVE-2026-7473?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-7467The Read More & Accordion plugin for WordPress is vulnerable…8.8
- CVE-2026-7468A security vulnerability has been detected in 1024-lab smart…7.3
- CVE-2026-7469A vulnerability was detected in Tenda 4G300 US_4G300V1.0Mt_V…6.3
- CVE-2026-7470A flaw has been found in Tenda 4G300 US_4G300V1.0Mt_V1.01.42…8.8
- CVE-2026-7471GitLab has remediated an issue in GitLab EE affecting all ve…3.5
- CVE-2026-7472The Read More & Accordion plugin for WordPress is vulnerable…4.9
- CVE-2026-7474HashiCorp Nomad and Nomad Enterprise prior to 2.0.1 are vuln…8.8
- CVE-2026-7475The Sky Addons plugin for WordPress is vulnerable to Stored …6.4
- CVE-2026-7480An Incorrect Permission Assignment for Critical Resource vul…7.3
- CVE-2026-7481GitLab has remediated an issue in GitLab EE affecting all ve…5.4
- CVE-2026-7482Ollama before 0.17.1 contains a heap out-of-bounds read vuln…9.1
- CVE-2026-7483Local privilege escalation potentially allowed an attacker t…8.5
Are you affected by CVE-2026-7473?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST