CVE-2018-15373

Name: CVE-2018-15373
Creator: NVD / NIST
Published: 2018-10-05T14:29:06.42+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.66%

Last modified Jun 17, 2026

CVE-2018-15373 is a vulnerability of currently unknown severity. A vulnerability in the implementation of Cisco Discovery Protocol functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to exhaust memory on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper memory handling by the affected software when the software processes high rates of Cisco Discovery Protocol packets that are sent to a device. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

A vulnerability in the implementation of Cisco Discovery Protocol functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to exhaust memory on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper memory handling by the affected software when the software processes high rates of Cisco Discovery Protocol packets that are sent to a device. An attacker could exploit this vulnerability by sending a high rate of Cisco Discovery Protocol packets to an affected device. A successful exploit could allow the attacker to exhaust memory on the affected device, resulting in a DoS condition.

Metrics

EPSS Probability

0.66%

46.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Ios	15.5\(3\)s3.16
Cisco	Ios Xe	15.5\(3\)s3.16

References

http://www.securityfocus.com/bid/105413Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cdp-dosVendor Advisory
http://www.securityfocus.com/bid/105413Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cdp-dosVendor Advisory

Timeline

Published: Oct 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-15373?

How severe is CVE-2018-15373?

Severity scoring for CVE-2018-15373 is pending analysis. The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2018-15373?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-15373?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST