CVE-2026-73461 EOS - Authorization Bypass

EOS platforms with AAA-based gRPC authorization enabled contain an authorization bypass caused by incorrect privilege level assignment in gRPC OpenConfig requests, letting authenticated users gain incorrect authorization, exploit requires authenticated user.

CVSS base score 8.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.39% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authorization Bypass
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-266

Vendor fix

Update to the latest EOS platform version with the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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