SB2025050948 - Denial of service in Multiple Cisco Products
Published: May 9, 2025
Security Bulletin ID
SB2025050948
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer Access with Incorrect Length Value (CVE-ID: CVE-2025-20191)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the incorrect handling of DHCPv6 packets in the Switch Integrated Security Features (SISF). A remote attacker on the local network can send a specially crafted DHCPv6 packet and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.