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Vulnerability record · CVE-2018-15317 · published 31 October 2018

CVE-2018-15317: F5 big-ip local traffic manager vulnerability

F5 · Big Ip Local Traffic Manager

In BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.5, 12.1.0-12.1.4.1, and 11.2.1-11.6.3.2, an attacker sending specially crafted SSL records to a SSL Virtual Server will cause corruption in the SSL data structures leading to intermittent decrypt BAD_RECORD_MAC errors. Clients will be unable to access the application load balanced by a virtual server with an SSL profile until tmm is restarted.

7.5 CVSS 3.0 High EPSS 1.4% · top 29.4%
7.5CVSS 3.0 base score, v2 5.0
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
13Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

In BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.1.5, 12.1.0-12.1.4.1, and 11.2.1-11.6.3.2, an attacker sending specially crafted SSL records to a SSL Virtual Server will cause corruption in the SSL data structures leading to intermittent decrypt BAD_RECORD_MAC errors. Clients will be unable to access the application load balanced by a virtual server with an SSL profile until tmm is restarted.

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
https://support.f5.com/csp/article/K43625118 MitigationVendor Advisory
https://support.f5.com/csp/article/K43625118?utm_source=f5support&amp%3Butm_medium=RSS
https://support.f5.com/csp/article/K43625118 MitigationVendor Advisory
https://support.f5.com/csp/article/K43625118?utm_source=f5support&amp%3Butm_medium=RSS

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

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Source: NIST National Vulnerability Database (record CVE-2018-15317), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.