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HIGH · 8.1

CVE-2021-34739

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...

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.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
CiscoSf250-24 Firmware<= 2.5
CiscoSf250-24-
CiscoSf250-24P Firmware<= 2.5
CiscoSf250-24P-
CiscoSf250-48 Firmware<= 2.5
CiscoSf250-48-
CiscoSf250-48Hp Firmware<= 2.5
CiscoSf250-48Hp-
CiscoSf250-08 Firmware<= 2.5
CiscoSf250-08-
CiscoSf250-08Hp Firmware<= 2.5
CiscoSf250-08Hp-
CiscoSf250-10P Firmware<= 2.5
CiscoSf250-10P-
CiscoSf250-18 Firmware<= 2.5
CiscoSf250-18-
CiscoSf250-26 Firmware<= 2.5
CiscoSf250-26-
CiscoSf250-26Hp Firmware<= 2.5
CiscoSf250-26Hp-

Related Weaknesses (CWE)

CWE-613

References

FAQ

What is CVE-2021-34739?

CVE-2021-34739 is a vulnerability with a CVSS score of 8.1 (HIGH). 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...

How severe is CVE-2021-34739?

CVE-2021-34739 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-34739?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Sf250-24 Firmware, Cisco Sf250-24, Cisco Sf250-24P Firmware, Cisco Sf250-24P, Cisco Sf250-48 Firmware.