CVE-2016-3686

What it is

The Single Sign-On (SSO) feature in F5 BIG-IP APM 11.x before 11.6.0 HF6 and BIG-IP Edge Gateway 11.0.0 through 11.3.0 might allow remote attackers to obtain sensitive SessionId information by leveraging access to the Location HTTP header in a redirect.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

1.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2016-04-13 16:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:46 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.5% in the next 30 days (EPSS).
• Severity: 5.9 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2016-04-13 16:59 UTC

Last modified

2026-06-17 00:46 UTC

Exploit probability

1.5% · EPSS, next 30 days

Weakness

CWE-200 · Information exposure

Record status

Modified

Affected

• f5 big-ip Edge Gateway 11.0.0
• f5 big-ip Edge Gateway 11.1.0
• f5 big-ip Edge Gateway 11.2.0
• f5 big-ip Edge Gateway 11.2.1
• f5 big-ip Edge Gateway 11.3.0
• f5 big-ip Access Policy Manager 11.0.0
• f5 big-ip Access Policy Manager 11.1.0
• f5 big-ip Access Policy Manager 11.2.0

Attack profile CVSS 3.0 · 5.9

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

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