SB20260415106 - Remote denial of service in Arista EOS with IPsec
Published: April 15, 2026
Security Bulletin ID
SB20260415106
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Validation of Syntactic Correctness of Input (CVE-ID: CVE-2025-8873)
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper validation of syntactic correctness of input in the IPsec dataplane processing pipeline when processing a specially crafted packet. A remote attacker can send a specially crafted packet to cause a denial of service.
Only systems with IPsec configured are vulnerable. Non-IPsec traffic and IPsec traffic not originating or terminating on the system are not affected.
Remediation
Install update from vendor's website.