CVE-2018-0180
Cisco IOS Software Denial-of-Service Vulnerability
Cisco IOS Software
Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition. These vulnerabilities affect Cisco devices that are running Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later. Cisco Bug IDs: CSCuy32360, CSCuz60599.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 3 March 2022. US federal agencies were required to remediate it by 17 March 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 4.9%, which is higher than 91.9% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Frequently asked questions
Is CVE-2018-0180 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2018-0180.
What does CVE-2018-0180 affect?
CVE-2018-0180 affects Cisco IOS Software. Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition. These vulnerabilities affect Cisco devices that are running Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later. Cisco Bug IDs: CSCuy32360, CSCuz60599.
How severe is CVE-2018-0180?
CVE-2018-0180 is rated MEDIUM with a CVSS base score of 5.9. EPSS puts the probability of exploitation in the next 30 days at 4.9%, higher than 91.9% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 17 March 2022.
How should organisations respond to CVE-2018-0180?
Apply the vendor patch for Cisco IOS Software as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.