EN

CVE-2024-20314

High
8.6
0.05.010.0
Year
2024
Published
Mar 27, 2024
Known Affected Devices
0
CVSS Score
8.6

What is CVE-2024-20314?

A vulnerability in the IPv4 Software-Defined Access (SD-Access) fabric edge node feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause high CPU utilization and stop all traffic processing, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain IPv4 packets. An attacker could exploit this vulnerability by sending certain IPv4 packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition.

CVSS Vector Breakdown

CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
AV
Attack Vector
Network

Exploitable remotely over the network without requiring access to the local system.

AC
Attack Complexity
Low

No special conditions required. Exploit can be performed reliably and repeatedly.

PR
Privileges Required
None

No authentication required. Any anonymous user can exploit this vulnerability.

UI
User Interaction
None

No user interaction required. Exploit runs without any victim action.

S
Scope
Changed

Exploiting the vulnerability can affect other components beyond the vulnerable one.

C
Confidentiality Impact
None

No confidentiality impact. Sensitive data is not exposed.

I
Integrity Impact
None

No integrity impact. Data cannot be modified.

A
Availability Impact
High

Complete denial of service. The component becomes fully unavailable.

Known Affected Devices

Cisco Cisco Catalyst 2960X-48TS-L Cisco Cisco Catalyst 2960L-24TS-LL Cisco Cisco Catalyst 3650-24PS-L Cisco Cisco Catalyst 9300-48P Cisco Cisco Catalyst 9300L-24T-4G Cisco Cisco Catalyst 9407R Cisco Cisco Nexus 7010 Cisco Cisco Nexus 9364C Cisco Cisco ASA 5508-X Cisco Cisco ASA 5515-X Cisco Cisco Firepower 4140 Cisco Cisco Catalyst 9800-L-C Cisco Cisco Meraki MS390-48U

FAQ

How severe is CVE-2024-20314?

CVE-2024-20314 has a CVSS score of 8.6/10, rated as High. This is a high severity vulnerability and should be patched as soon as possible.

What does the CVSS score mean for CVE-2024-20314?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2024-20314 scores 8.6/10 (High). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2024-20314?

The list of devices confirmed to be affected by CVE-2024-20314 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2024-20314?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.