CVE-2024-20311

HIGH
Published Mar 27, 2024 Modified Jul 30, 2025 CWE-674

Description

A vulnerability in the Locator ID Separation Protocol (LISP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to the incorrect handling of LISP packets. An attacker could exploit this vulnerability by sending a crafted LISP packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Note: This vulnerability could be exploited over either IPv4 or IPv6 transport.

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CVSS v3.1 Score

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

Weakness Type (CWE)

CWE-674 CWE-674

Affected Products

Vendor Product
cisco ios
cisco ios
cisco ios
cisco ios
cisco ios
cisco ios
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References

Frequently Asked Questions

What is CVE-2024-20311? +
A vulnerability in the Locator ID Separation Protocol (LISP) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability is due to the incorrect handling of LISP packets. An attacker could exploit this vulnerability by sending a crafted LISP packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Note: This vulnerability could be exploited over either IPv4 or IPv6 transport. It has a CVSS v3.1 base score of 8.6 (HIGH).
How severe is CVE-2024-20311? +
CVE-2024-20311 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-20311? +
CVE-2024-20311 affects products from cisco, specifically: ios, ios_xe. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-20311? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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