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CVE-2018-0161

Medium 6.3 Exploited in the wild (KEV)

Confirmed active exploitation — CISA KEV catalog

Name
Cisco IOS Software Resource Management Errors Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply updates per vendor instructions.

Description

A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco IOS Software running on certain models of Cisco Catalyst Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition, aka a GET MIB Object ID Denial of Service Vulnerability. The vulnerability is due to a condition that could occur when the affected software processes an SNMP read request that contains a request for the ciscoFlashMIB object ID (OID). An attacker could trigger this vulnerability by issuing an SNMP GET request for the ciscoFlashMIB OID on an affected device. A successful exploit could cause the affected device to restart due to a SYS-3-CPUHOG. This vulnerability affects the following Cisco devices if they are running a vulnerable release of Cisco IOS Software and are configured to use SNMP Version 2 (SNMPv2) or SNMP Version 3 (SNMPv3): Cisco Catalyst 2960-L Series Switches, Cisco Catalyst Digital Building Series Switches 8P, Cisco Catalyst Digital Building Series Switches 8U. Cisco Bug IDs: CSCvd89541.

Metrics

CVSS 3.1
6.3 (MEDIUM) Score source: NVD CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
EPSS — exploit probability
4% (percentile: 91) as of 1 November 2026
CWE
CWE-399

Affected products

cisco: ios; cisco: catalyst 2960l-16ps-ll; cisco: catalyst 2960l-16ts-ll; cisco: catalyst 2960l-24pq-ll; cisco: catalyst 2960l-24ps-ll; cisco: catalyst 2960l-24tq-ll; cisco: catalyst 2960l-24ts-ll; cisco: catalyst 2960l-48pq-ll; cisco: catalyst 2960l-48ps-ll; cisco: catalyst 2960l-48tq-ll; cisco: catalyst 2960l-48ts-ll; cisco: catalyst 2960l-8ps-ll; cisco: catalyst 2960l-8ts-ll; cisco: catalyst digital building series switches-8p; cisco: catalyst digital building series switches-8u

References