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MEDIUM · 5.3

CVE-2021-40125

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authe...

Vulnerability Description

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to trigger a denial of service (DoS) condition on an affected device. This vulnerability is due to improper control of a resource. An attacker with the ability to spoof a trusted IKEv2 site-to-site VPN peer and in possession of valid IKEv2 credentials for that peer could exploit this vulnerability by sending malformed, authenticated IKEv2 messages to an affected device. A successful exploit could allow the attacker to trigger a reload of the device.

CVSS Score

5.3

MEDIUM

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

Affected Products

VendorProductVersions
CiscoFirepower Threat Defense< 6.4.0.13
CiscoAdaptive Security Appliance Software>= 9.8.0, < 9.8.4.40
CiscoAsa 5512-X Firmware009.016\(001.025\)
CiscoAsa 5512-X-
CiscoAsa 5505 Firmware009.016\(001.025\)
CiscoAsa 5505-
CiscoAsa 5515-X Firmware009.016\(001.025\)
CiscoAsa 5515-X-
CiscoAsa 5525-X Firmware009.016\(001.025\)
CiscoAsa 5525-X-
CiscoAsa 5545-X Firmware009.016\(001.025\)
CiscoAsa 5545-X-
CiscoAsa 5555-X Firmware009.016\(001.025\)
CiscoAsa 5555-X-
CiscoAsa 5580 Firmware009.016\(001.025\)
CiscoAsa 5580-
CiscoAsa 5585-X Firmware009.016\(001.025\)
CiscoAsa 5585-X-

Related Weaknesses (CWE)

CWE-416CWE-400

References

FAQ

What is CVE-2021-40125?

CVE-2021-40125 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A vulnerability in the Internet Key Exchange Version 2 (IKEv2) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authe...

How severe is CVE-2021-40125?

CVE-2021-40125 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-40125?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Firepower Threat Defense, Cisco Adaptive Security Appliance Software, Cisco Asa 5512-X Firmware, Cisco Asa 5512-X, Cisco Asa 5505 Firmware.