NULL pointer dereference in Cisco Systems, Inc products - CVE-2025-20262
Published: August 28, 2025
Vulnerability identifier: #VU114491
CSH Severity: Medium
CVSS v4: 5.3 [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]
CVE-ID: CVE-2025-20262
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Cisco Nexus 9000 Series Switches NX-OS Mode
Cisco Nexus 3000 Series Switches
Cisco NX-OS
Cisco Nexus 3000 Series Switches
Cisco NX-OS
How to mitigate CVE-2025-20262
Install updates from vendor's website.
Cisco NX-OS - addressed in versions 9.3(15), 10.2(9), 10.3(7), 10.3(8), 10.4(5), 10.5(3), 10.6(1)