Cisco Small Business 200, 300, and 500 Series Switches Web-Based Management Interface Denial of Service Vulnerability
A vulnerability in the web-based management interface of Cisco Small Business 200 Series Smart Switches, Cisco Small Business 300 Series Managed Switches, and Cisco Small Business 500 Series Stackable Managed Switches could allow an unauthenticated, remote attacker to render the web-based management interface unusable, resulting in a denial of service (DoS) condition. This vulnerability is due to improper validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to cause a permanent invalid redirect for requests sent to the web-based management interface of the device, resulting in a DoS condition. There are no workarounds that address this vulnerability.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-40127US | medium5.3 | — | ||
A vulnerability in the web-based management interface of Cisco Small Business 200 Series Smart Switches, Cisco Small Business 300 Series Managed Switches, and Cisco Small Business… | ||||
references
External citations — patches, advisories, analysis.
- Cisco Small Business 200, 300, and 500 Series Switches Web-Based Management Interface Denial of Service Vulnerabilityself
- Cisco Security Vulnerability Policyexternal
- End-of-Sale and End-of-Life Announcement for the Cisco Small Business 200 Series Smart Switchesexternal
- End-of-Sale and End-of-Life Announcements for the Cisco Small Business 300 Series Managed Switchesexternal
- End-of-Sale and End-of-Life Announcements for the Cisco 500 Series Stackable Managed Switchesexternal
- Cisco Security Advisories pageexternal
remediations (1)
- FixedCisco Small Business Smart and Managed Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
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