Is CVE-2024-20433 being actively exploited?

CVE-2024-20433 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2024-20433?

CVE-2024-20433 has a CVSS 3.1 base score of 8.6 (HIGH).

CVE-2024-20433

HIGH · CVSS 8.6EPSS 0.6%EU EUVD

A vulnerability in the Resource Reservation Protocol (RSVP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a buffer overflow when processing crafted RSVP packets. An attacker could exploit this vulnerability by sending RSVP traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

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-121
EPSS score: 0.6% (49th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2024-18148)
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-2024-18148 in the EU Vulnerability Database. Last updated in EUVD on September 25, 2024.

View on the EU Vulnerability Database

Affected products

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and 950 more…

Certified products that may be affected

11 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

See all 11 in the Security Certifications Explorer.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rsvp-dos-OypvgVZf(Vendor Advisory)

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

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