CVE-2026-7473
Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability - [Actively Exploited]
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.
INFO
Published Date :
June 5, 2026, 5:17 p.m.
Last Modified :
June 9, 2026, 8:48 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
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.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Unknown
https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137 ; https://nvd.nist.gov/vuln/detail/CVE-2026-7473
Affected Products
The following products are affected by CVE-2026-7473
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Arista EOS to a fixed version.
- Verify tunnel configuration and protocols.
- Monitor network traffic for unexpected tunnels.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-7473.
| URL | Resource |
|---|---|
| https://www.arista.com/en/support/advisories-notices/security-advisory/22872-security-advisory-0137 | Broken Link |
| https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137 | Vendor Advisory Mitigation |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7473 | US Government Resource |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-7473 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-7473
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-7473 vulnerability anywhere in the article.
-
TheCyberThrone
CISA KEV Update — Cisco Catalyst SD-WAN, Google Chrome V8 & Arista EOS
CISA added three new vulnerabilities to its Known Exploited Vulnerabilities catalog on June 9, 2026: CVE-2026-20245 (Cisco Catalyst SD-WAN Manager), CVE-2026-11645 (Google Chromium V8), and CVE-2026-7 ... Read more
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The Hacker News
CISA Adds Cisco, Chrome, and Arista Flaws to KEV Catalog Amid Active Exploitation
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added three new vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitati ... Read more
The following table lists the changes that have been made to the
CVE-2026-7473 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 09, 2026
Action Type Old Value New Value Added CPE Configuration AND OR *cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* OR cpe:2.3:h:arista:7512r3:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7508r3:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7504r3:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7808r3:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7804r3:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3-48cq:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3k-48cq:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r3-24p:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r3-24d:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r3-36cq:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r3k-36cq:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280pr3-24:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280dr3-24:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3-32p4:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3-32d4:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr2k-60:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3-96:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr3-48yc8:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7020sr-24c2:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7020tr-48:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7020tra-48:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7020sr-32c2:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7816r3:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7812r3:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3-36d:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3a-36p:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3a-36pm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3ak-36pm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3a-36d:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3a-36dm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3ak-36dm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3k-48cqms:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r3k-48y4d:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7289r3a-sc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7289r3am-sc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7289r3ak-sc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280dr3a-54:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280dr3am-54:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280dr3ak-54:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280dr3am-36:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280dr3ak-36:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280dr3a-36:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3a-24d12:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3a-48d6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3-36s:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3a-72:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr3-40yc6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280tr3-40c6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7020srg-24c2:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr-48:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr2-60:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr2a-30:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr2a-60:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr2k-30:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr2m-30:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280qr-c36:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280qr-c36-m:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280qr-c72:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280qra-c36s:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280qra-c36sm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr-48c6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr2-48yc6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr2-48yc6-m:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr2a-48yc6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr2a-48yc6-m:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr2k-48c6-m:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sra-48c6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sra-48c6-m:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sram-48c6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280srm-40cx2:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280tr-48c6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280tra-48c6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280tra-48c6-m:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r-36cq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r-36q-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r-48s2cq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r-8cfpx-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r2-36cq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r2a-36cq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r2ak-36cq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r2ak-48ycq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r2am-36cq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500r2m-36cq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7500rm-36cq-lc:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7504r-fm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7508r-fm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7512r-fm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7516-sup2:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7516n-ch:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7516r-fm:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3ak-24d12:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3ak-48d6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3am-24d12:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3am-48d6:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3mk-32d4s:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3mk-32p4s:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3ak-72:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280cr3am-72:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7280sr3m-48yc8:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7800r3k-72y:-:*:*:*:*:*:*:* cpe:2.3:h:arista:7816lr3:-:*:*:*:*:*:*:* Added Reference Type Arista Networks, Inc.: https://www.arista.com/en/support/advisories-notices/security-advisory/22872-security-advisory-0137 Types: Broken Link Added Reference Type CISA-ADP: https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137 Types: Mitigation, Vendor Advisory Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7473 Types: US Government Resource -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Jun. 09, 2026
Action Type Old Value New Value Added Date Added 2026-06-09 Added Due Date 2026-06-09 Added Required Action 2026-06-09 Added Vulnerability Name 2026-06-09 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 09, 2026
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7473 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 08, 2026
Action Type Old Value New Value Added Reference https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137 -
New CVE Received by [email protected]
Jun. 05, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N Added CWE CWE-1023 Added Reference https://www.arista.com/en/support/advisories-notices/security-advisory/22872-security-advisory-0137