CVE-2025-20352: Cisco IOS and IOS XE Stack-based Buffer Overflow Vulnerability

#cisco #iosandiosxe #cybersecurity #vulnerability

CVE ID

CVE-2025-20352

Vulnerability Name

Cisco IOS and IOS XE Stack-based Buffer Overflow Vulnerability

Project: Cisco
Product: IOS and IOS XE

Date

Date Added: 2025-09-29
Due Date: 2025-10-20

Description

Cisco IOS and IOS XE contains a stack-based buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) subsystem that could allow for denial of service or remote code execution. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system.

Known To Be Used in Ransomware Campaigns?

Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.