#VU114486 Compiler Optimization Removal or Modification of Security-critical Code in Cisco Systems, Inc products - CVE-2025-20241
Published: August 28, 2025
Vulnerability identifier: #VU114486
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H/E:U/U:Green
CVE-ID: CVE-2025-20241
CWE-ID: CWE-733
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Cisco NX-OS
Cisco Nexus 3000 Series Switches
Cisco Nexus 9000 Series Switches
Cisco NX-OS
Cisco Nexus 3000 Series Switches
Cisco Nexus 9000 Series Switches
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the Intermediate System-to-Intermediate System (IS-IS) feature. A remote attacker on the local network can send a specially crafted IS-IS packet and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.