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CVE-2024-20480

HIGH
Published 2024-09-25T16:27:59.969Z
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CVSS Score

V3.1
8.6
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.002
probability
of exploitation in the wild

There is a 0.2% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.391
Higher than 39.1% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

A vulnerability in the DHCP Snooping feature of Cisco IOS XE Software on Software-Defined Access (SD-Access) fabric edge nodes could allow an unauthenticated, remote attacker to cause high CPU utilization on an affected device, resulting in a denial of service (DoS) condition that requires a manual reload to recover.

This vulnerability is due to improper handling of IPv4 DHCP packets. An attacker could exploit this vulnerability by sending certain IPv4 DHCP 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 that requires a manual reload to recover.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Cisco

Cisco IOS XE Software

Affected Versions:

16.1.1 16.1.2 16.1.3 16.2.1 16.2.2 16.3.1 16.3.2 16.3.3 16.3.1a 16.3.4 16.3.5 16.3.5b 16.3.6 16.3.7 16.3.8 16.3.9 16.3.10 16.3.11 16.4.1 16.4.2 16.4.3 16.5.1 16.5.1a 16.5.1b 16.5.2 16.5.3 16.6.1 16.6.2 16.6.3 16.6.4 16.6.5 16.6.4a 16.6.5a 16.6.6 16.6.7 16.6.8 16.6.9 16.6.10 16.7.1 16.7.1a 16.7.1b 16.7.2 16.7.3 16.7.4 16.8.1 16.8.1a 16.8.1b 16.8.1s 16.8.1c 16.8.1d 16.8.2 16.8.1e 16.8.3 16.9.1 16.9.2 16.9.1a 16.9.1b 16.9.1s 16.9.3 16.9.4 16.9.3a 16.9.5 16.9.5f 16.9.6 16.9.7 16.9.8 16.10.1 16.10.1a 16.10.1b 16.10.1s 16.10.1c 16.10.1e 16.10.1d 16.10.2 16.10.1f 16.10.1g 16.10.3 16.11.1 16.11.1a 16.11.1b 16.11.2 16.11.1s 16.12.1 16.12.1s 16.12.1a 16.12.1c 16.12.1w 16.12.2 16.12.1y 16.12.2a 16.12.3 16.12.8 16.12.2s 16.12.1x 16.12.1t 16.12.4 16.12.3s 16.12.3a 16.12.4a 16.12.5 16.12.6 16.12.1z1 16.12.5a 16.12.5b 16.12.1z2 16.12.6a 16.12.7 16.12.9 16.12.10 16.12.10a 16.12.11 17.1.1 17.1.1a 17.1.1s 17.1.1t 17.1.3 17.2.1 17.2.1r 17.2.1a 17.2.1v 17.2.2 17.2.3 17.3.1 17.3.2 17.3.3 17.3.1a 17.3.1w 17.3.2a 17.3.1x 17.3.1z 17.3.4 17.3.5 17.3.4a 17.3.6 17.3.4b 17.3.4c 17.3.5a 17.3.5b 17.3.7 17.3.8 17.3.8a 17.4.1 17.4.2 17.4.1a 17.4.1b 17.4.2a 17.5.1 17.5.1a 17.6.1 17.6.2 17.6.1w 17.6.1a 17.6.1x 17.6.3 17.6.1y 17.6.1z 17.6.3a 17.6.4 17.6.1z1 17.6.5 17.6.6 17.6.6a 17.6.5a 17.6.7 17.7.1 17.7.1a 17.7.1b 17.7.2 17.10.1 17.10.1a 17.10.1b 17.8.1 17.8.1a 17.9.1 17.9.1w 17.9.2 17.9.1a 17.9.1x 17.9.1y 17.9.3 17.9.2a 17.9.1x1 17.9.3a 17.9.4 17.9.1y1 17.9.5 17.9.4a 17.9.5a 17.9.5b 17.11.1 17.11.1a 17.12.1 17.12.1w 17.12.1a 17.12.1x 17.12.2 17.12.3 17.12.2a 17.12.1y 17.12.3a 17.13.1 17.13.1a 17.14.1 17.14.1a 17.11.99SW
cisco

ios_xe

Affected Versions:

16.1.1 16.1.2 16.1.3 16.2.1 16.2.2 16.3.1 16.3.2 16.3.3 16.3.1a 16.3.4 16.3.5 16.3.5b 16.3.6 16.3.7 16.3.8 16.3.9 16.3.10 16.3.11 16.4.1 16.4.2 16.4.3 16.5.1 16.5.1a 16.5.1b 16.5.2 16.5.3 16.6.1 16.6.2 16.6.3 16.6.4 16.6.5 16.6.4a 16.6.5a 16.6.6 16.6.7 16.6.8 16.6.9 16.6.10 16.7.1 16.7.1a 16.7.1b 16.7.2 16.7.3 16.7.4 16.8.1 16.8.1a 16.8.1b 16.8.1s 16.8.1c 16.8.1d 16.8.2 16.8.1e 16.8.3 16.9.1 16.9.2 16.9.1a 16.9.1b 16.9.1s 16.9.3 16.9.4 16.9.3a 16.9.5 16.9.5f 16.9.6 16.9.7 16.9.8 16.10.1 16.10.1a 16.10.1b 16.10.1s 16.10.1c 16.10.1e 16.10.1d 16.10.2 16.10.1f 16.10.1g 16.10.3 16.11.1 16.11.1a 16.11.1b 16.11.2 16.11.1s 16.12.1 16.12.1s 16.12.1a 16.12.1c 16.12.1w 16.12.2 16.12.1y 16.12.2a 16.12.3 16.12.8 16.12.2s 16.12.1x 16.12.1t 16.12.4 16.12.3s 16.12.3a 16.12.4a 16.12.5 16.12.6 16.12.1z1 16.12.5a 16.12.5b 16.12.1z2 16.12.6a 16.12.7 16.12.9 16.12.10 16.12.10a 16.12.11 17.1.1 17.1.1a 17.1.1s 17.1.1t 17.1.3 17.2.1 17.2.1r 17.2.1a 17.2.1v 17.2.2 17.2.3 17.3.1 17.3.2 17.3.3 17.3.1a 17.3.1w 17.3.2a 17.3.1x 17.3.1z 17.3.4 17.3.5 17.3.4a 17.3.6 17.3.4b 17.3.4c 17.3.5a 17.3.5b 17.3.7 17.3.8 17.4.1 17.4.2 17.4.1a 17.4.1b 17.4.2a 17.5.1 17.5.1a 17.6.1 17.6.2 17.6.1w 17.6.1a 17.6.1x 17.6.3 17.6.1y 17.6.1z 17.6.3a 17.6.4 17.6.1z1 17.6.5 17.6.6 17.6.6a 17.6.5a 17.6.7 17.7.1 17.7.1a 17.7.1b 17.7.2 17.10.1 17.10.1a 17.10.1b 17.8.1 17.8.1a 17.9.1 17.9.1w 17.9.2 17.9.1a 17.9.1x 17.9.1y 17.9.3 17.9.2a 17.9.1x1 17.9.3a 17.9.4 17.9.1y1 17.9.5 17.9.4a 17.9.5a 17.9.5b 17.11.1 17.11.1a 17.12.1 17.12.1w 17.12.1a 17.12.1x 17.12.2 17.12.3 17.12.2a 17.12.1y 17.12.3a 17.13.1 17.13.1a 17.14.1 17.14.1a 17.11.99sw

EU Vulnerability Database

Monitored by ENISA for EU cybersecurity

EU Coordination

EU Coordinated

Exploitation Status

No Known Exploitation

EUVD ID

View on ENISA

ENISA Analysis

Malicious code in bioql (PyPI)

Affected Products (ENISA)

cisco
cisco ios xe software

ENISA Scoring

CVSS Score (3.1)

8.6
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Score

0.240
probability

ENISA References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-sda-edge-dos-MBcbG9k

Data provided by ENISA EU Vulnerability Database. Last updated: October 3, 2025

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-2g8x-wxp8-jhpg

Advisory Details

A vulnerability in the DHCP Snooping feature of Cisco IOS XE Software on Software-Defined Access (SD-Access) fabric edge nodes could allow an unauthenticated, remote attacker to cause high CPU utilization on an affected device, resulting in a denial of service (DoS) condition that requires a manual reload to recover. This vulnerability is due to improper handling of IPv4 DHCP packets. An attacker could exploit this vulnerability by sending certain IPv4 DHCP 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 that requires a manual reload to recover.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-20480
WEB https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-sda-edge-dos-MBcbG9k

Advisory provided by GitHub Security Advisory Database. Published: September 25, 2024, Modified: September 25, 2024

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-sda-edge-dos-MBcbG9k
Published: 2024-09-25T16:27:59.969Z
Last Modified: 2024-09-25T19:25:52.910Z
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