What is CVE-2017-6139?

CVE-2017-6139 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Insertion of Sensitive Information into Log File. CVSS score: 5.9/10. Published 2017-12-21.

How severe is CVE-2017-6139?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Information disclosure in F5 Big-Ip Access Policy Manager

CVE-2017-6139

In F5 BIG-IP APM software version 13.0.0 and 12.1.2, under rare conditions, the BIG-IP APM system appends log details when responding to client requests. Details in the log file can vary; customers running debug mode logging with BIG-IP APM are at highest risk.

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

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.017 (76.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · 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-532 — Insertion of Sensitive Information into Log File

References

support.f5.com/csp/article/K45432295 (Mitigation, Issue Tracking, Vendor Advisory)
www.securitytracker.com/id/1040055 (VDB Entry, Third Party Advisory, vdb-entry)
www.securityfocus.com/bid/106186 (vdb-entry)

Frequently asked questions

What is CVE-2017-6139?: CVE-2017-6139 is a medium-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Insertion of Sensitive Information into Log File. CVSS score: 5.9/10. Published 2017-12-21.
How severe is CVE-2017-6139?: Medium severity. CVSS v3 base score is 5.9 out of 10.