What is CVE-2018-5528?

CVE-2018-5528 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2018-06-27.

How severe is CVE-2018-5528?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Improper input validation in F5 Big-Ip Access Policy Manager

CVE-2018-5528

Under certain conditions, TMM may restart and produce a core file while processing APM data on BIG-IP 13.0.1 or 13.1.0.4-13.1.0.7.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-06-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (66.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: -0.000

Affected products

F5 Big-Ip Access Policy Manager — versions 13.0.1
F5 Networks, Inc. Big-Ip (Apm) — versions 13.1.0.4-13.1.0.7, 13.0.1

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securitytracker.com/id/1041197 (VDB Entry, Third Party Advisory, vdb-entry)
support.f5.com/csp/article/K27044729 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-5528?: CVE-2018-5528 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2018-06-27.
How severe is CVE-2018-5528?: Medium severity. CVSS v3 base score is 5.3 out of 10.