Vulnerability · Published Jan 29, 2020 · Assigned by cisco

CVE-2020-3147Cisco Small Business Switches Denial of Service Vulnerability

High 8.6

In plain English

A high-severity improper input validation in Cisco Small Business 300 Series Managed Switches from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 83% of all known vulnerabilities).

Severity (CVSS 3.0)8.6High

Exploit odds (30 days)2.3%top 16.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the web UI of Cisco Small Business Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of requests sent to the web interface. An attacker could exploit this vulnerability by sending a malicious request to the web interface of an affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a DoS condition. This vulnerability affects firmware releases prior than 1.3.7.18

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco Small Business 300 Series Managed Switches	unspecified – before 1.3.7.18

Weakness: CWE-20 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References

20200129 Cisco Small Business Switches Denial of Service Vulnerability vendor-advisory, x_refsource_CISCO