CVE-2024-20434

MEDIUM EPSS 15.8%
Published Sep 25, 20241y ago · Modified Jun 17, 20262w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Sep 25, 2024 1y ago
Last Modified Jun 17, 2026 2w ago

Description

A vulnerability in Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the control plane of an affected device. This vulnerability is due to improper handling of frames with VLAN tag information. An attacker could exploit this vulnerability by sending crafted frames to an affected device. A successful exploit could allow the attacker to render the control plane of the affected device unresponsive. The device would not be accessible through the console or CLI, and it would not respond to ping requests, SNMP requests, or requests from other control plane protocols. Traffic that is traversing the device through the data plane is not affected. A reload of the device is required to restore control plane services.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability Low

Threat Intelligence

EPSS Exploit Probability
15.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 91

VendorProductVersionRange
ciscoios_xe16.6.1any
ciscoios_xe16.6.2any
ciscoios_xe16.6.3any
ciscoios_xe16.6.4any
ciscoios_xe16.6.4aany
ciscoios_xe16.6.5any
ciscoios_xe16.6.6any
ciscoios_xe16.6.7any
ciscoios_xe16.6.8any
ciscoios_xe16.6.9any
ciscoios_xe16.6.10any
ciscoios_xe16.7.1any
ciscoios_xe16.8.1any
ciscoios_xe16.8.1aany
ciscoios_xe16.8.1sany
ciscoios_xe16.9.1any
ciscoios_xe16.9.1sany
ciscoios_xe16.9.2any
ciscoios_xe16.9.3any
ciscoios_xe16.9.4any
ciscoios_xe16.9.5any
ciscoios_xe16.9.6any
ciscoios_xe16.9.7any
ciscoios_xe16.9.8any
ciscoios_xe16.10.1any
ciscoios_xe16.10.1eany
ciscoios_xe16.10.1sany
ciscoios_xe16.11.1any
ciscoios_xe16.11.1bany
ciscoios_xe16.11.1sany
ciscoios_xe16.12.1any
ciscoios_xe16.12.1cany
ciscoios_xe16.12.1sany
ciscoios_xe16.12.2any
ciscoios_xe16.12.2sany
ciscoios_xe16.12.3any
ciscoios_xe16.12.3aany
ciscoios_xe16.12.3sany
ciscoios_xe16.12.4any
ciscoios_xe16.12.4aany
ciscoios_xe16.12.5any
ciscoios_xe16.12.5bany
ciscoios_xe16.12.6any
ciscoios_xe16.12.6aany
ciscoios_xe16.12.7any
ciscoios_xe16.12.8any
ciscoios_xe17.1.1any
ciscoios_xe17.1.1sany
ciscoios_xe17.1.1tany
ciscoios_xe17.1.3any
ciscoios_xe17.2.1any
ciscoios_xe17.2.1aany
ciscoios_xe17.3.1any
ciscoios_xe17.3.2any
ciscoios_xe17.3.2aany
ciscoios_xe17.3.3any
ciscoios_xe17.3.4any
ciscoios_xe17.3.4bany
ciscoios_xe17.3.5any
ciscoios_xe17.3.6any
ciscoios_xe17.3.7any
ciscoios_xe17.3.8any
ciscoios_xe17.3.8aany
ciscoios_xe17.4.1any
ciscoios_xe17.5.1any
ciscoios_xe17.6.1any
ciscoios_xe17.6.2any
ciscoios_xe17.6.3any
ciscoios_xe17.6.4any
ciscoios_xe17.6.5any
ciscoios_xe17.6.5aany
ciscoios_xe17.6.6any
ciscoios_xe17.6.6aany
ciscoios_xe17.6.7any
ciscoios_xe17.7.1any
ciscoios_xe17.8.1any
ciscoios_xe17.9.1any
ciscoios_xe17.9.2any
ciscoios_xe17.9.3any
ciscoios_xe17.9.4any
ciscoios_xe17.9.4aany
ciscoios_xe17.9.5any
ciscoios_xe17.10.1any
ciscoios_xe17.10.1bany
ciscoios_xe17.11.1any
ciscoios_xe17.11.99swany
ciscoios_xe17.12.1any
ciscoios_xe17.12.2any
ciscoios_xe17.12.3any
ciscoios_xe17.13.1any
ciscoios_xe17.14.1any

References 1

  • sec.cloudapps.cisco.com https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vlan-dos-27Pur5RT
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.