What is CVE-2017-6129?

CVE-2017-6129 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-12-21.

How severe is CVE-2017-6129?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in F5 Big-Ip Access Policy Manager

CVE-2017-6129

In F5 BIG-IP APM software version 13.0.0 and 12.1.2, in some circumstances, APM tunneled VPN flows can cause a VPN/PPP connflow to be prematurely freed or cause TMM to stop responding with a "flow not in use" assertion. An attacker may be able to disrupt traffic or cause the BIG-IP system to fail over to another device in the device group.

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

Published 2017-12-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

F5 Big-Ip Access Policy Manager — versions 12.1.2, 13.0.0
F5 Networks, Inc. Big-Ip Apm — versions 12.1.2, 13.0.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

support.f5.com/csp/article/K20087443 (Issue Tracking, Vendor Advisory)
www.securitytracker.com/id/1040047 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-6129?: CVE-2017-6129 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-12-21.
How severe is CVE-2017-6129?: High severity. CVSS v3 base score is 7.5 out of 10.