SB2025082833 - Denial of service in Cisco Nexus 3000 and 9000 Series Switches
Published: August 28, 2025
Security Bulletin ID
SB2025082833
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2025-20262)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the Protocol Independent Multicast Version 6 (PIM6) feature. A remote user can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.