CVE-2021-34739

Cisco Small Business Series Switches Session Credentials Replay Vulnerability

Description

A vulnerability in the web-based management interface of multiple Cisco Small Business Series Switches could allow an unauthenticated, remote attacker to replay valid user session credentials and gain unauthorized access to the web-based management interface of an affected device. This vulnerability is due to insufficient expiration of session credentials. An attacker could exploit this vulnerability by conducting a man-in-the-middle attack against an affected device to intercept valid session credentials and then replaying the intercepted credentials toward the same device at a later time. A successful exploit could allow the attacker to access the web-based management interface with administrator privileges.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.50%
Vendor Advisory cisco.com
Affected: Cisco Cisco Small Business Smart and Managed Switches
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-34739?
CVE-2021-34739 has been scored as a high severity vulnerability.
How to fix CVE-2021-34739?
To fix CVE-2021-34739, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34739 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34739 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34739?
CVE-2021-34739 affects Cisco Cisco Small Business Smart and Managed Switches.
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