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CVE-2024-20311

HIGH · CVSS 8.6EPSS 0.8%EU EUVD

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.

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-674
EPSS score
0.8% (56th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2024-18026)
Published
March 27, 2024
NVD last modified
June 17, 2026
Status
Analyzed

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2024-18026 in the EU Vulnerability Database. Last updated in EUVD on August 27, 2024.

View on the EU Vulnerability Database

Affected products

  • cisco / ios
  • cisco / ios
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  • cisco / ios
  • cisco / ios

and 658 more…

Certified products that may be affected

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

References

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

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