SB2025072257 - Authentication bypass in Arista EOS
Published: July 22, 2025
Security Bulletin ID
SB2025072257
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Authentication bypass using an alternate path or channel (CVE-ID: CVE-2025-6188)
CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists missing authentication when handling UDP packets sent with source port 3503. A remote non-authenticated attacker can send specially crafted UDP packets and bypass authentication.
Remediation
Install update from vendor's website.