Is CVE-2024-20467 being actively exploited?

CVE-2024-20467 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2024-20467?

CVE-2024-20467 has a CVSS 3.1 base score of 8.6 (HIGH).

CVE-2024-20467

HIGH · CVSS 8.6EPSS 1.0%EU EUVD

A vulnerability in the implementation of the IPv4 fragmentation reassembly code in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper management of resources during fragment reassembly. An attacker could exploit this vulnerability by sending specific sizes of fragmented packets to an affected device or through a Virtual Fragmentation Reassembly (VFR)-enabled interface on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: This vulnerability affects Cisco ASR 1000 Series Aggregation Services Routers and Cisco cBR-8 Converged Broadband Routers if they are running Cisco IOS XE Software Release 17.12.1 or 17.12.1a.

Key facts

CVSS score: 8.6 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness (CWE): CWE-399
EPSS score: 1.0% (61th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2024-18182)
Published: September 25, 2024
NVD last modified: June 17, 2026
Status: Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2024-18182 in the EU Vulnerability Database. Last updated in EUVD on September 25, 2024.

View on the EU Vulnerability Database

Affected products

cisco / ios xe
cisco / ios xe
cisco / ios xe

Certified products that may be affected

5 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Cisco Embedded Services 9300 and 3300 Series Switches (ESS9300 & ESS3300) running IOS-XE 17.12 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-11521-2025 - active
Cisco cEdge Routers running IOS XE 17.12 with SD-WAN 20.12 - Cisco Systems, Inc. - Common Criteria 654-LSS - active
Cisco Catalyst Industrial Ethernet 3100 (IE3100) Rugged Series Switches running IOS-XE 17.12 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-11490-2024 - archived
Cisco Catalyst Industrial Ethernet 9300 Rugged Series Switches running IOS-XE 17.12 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-11466-2024 - archived
Cisco Catalyst Industrial Ethernet 3200, 3300, 3400, 3400H (IE3x00) Rugged Series Switches running IOS-XE 17.12 - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-11443-2024 - archived

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cpp-vfr-dos-nhHKGgO(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

Query CVEs from your AI assistant

The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.

Add the CVE brain