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Vulnerability record · CVE-2018-15319 · published 31 October 2018

CVE-2018-15319: F5 big-ip local traffic manager improper input validation vulnerability

F5 · Big Ip Local Traffic Manager

On BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, or 12.1.0-12.1.3.6, malicious requests made to virtual servers with an HTTP profile can cause the TMM to restart. The issue is exposed with the non-default "normalize URI" configuration options used in iRules and/or BIG-IP LTM policies.

7.5 CVSS 3.0 High EPSS 1.9% · top 21.6% CWE-20 · Improper input validation
7.5CVSS 3.0 base score, v2 7.8
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
13Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

On BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.1, or 12.1.0-12.1.3.6, malicious requests made to virtual servers with an HTTP profile can cause the TMM to restart. The issue is exposed with the non-default "normalize URI" configuration options used in iRules and/or BIG-IP LTM policies.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

13 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/107052 Third Party AdvisoryVDB Entry
https://support.f5.com/csp/article/K64208870 Vendor Advisory
http://www.securityfocus.com/bid/107052 Third Party AdvisoryVDB Entry
https://support.f5.com/csp/article/K64208870 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-15319), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.