What’s Vulnerable › Vulnerabilities

CVE-2018-0161: Cisco IOS Software Resource Management Errors Vulnerability

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-03-03
• EPSS: 4.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-03-28 · updated 2026-06-17
• Weakness: CWE-399

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.

Affected products

• Cisco IOS: 15.2(5)e

References

• http://www.securityfocus.com/bid/103573
• http://www.securitytracker.com/id/1040589
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-snmp
• http://www.securityfocus.com/bid/103573
• http://www.securitytracker.com/id/1040589
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-snmp
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0161

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