How severe is CVE-2016-3686?

CVE-2016-3686 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-3686 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-3686?

CVE-2016-3686 primarily affects F5 Big-ip Edge Gateway. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-3686?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2016-3686 published?

CVE-2016-3686 was published on 2016-04-13 and last updated on 2026-06-17.

CVE-2016-3686

CVE-2016-3686 is a medium-severity vulnerability in F5 Big-ip Edge Gateway with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: F5 Big-ip Edge Gateway
Published: 2016-04-13
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2016-3686?: 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.
How severe is CVE-2016-3686?: CVE-2016-3686 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-3686 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-3686?: CVE-2016-3686 primarily affects F5 Big-ip Edge Gateway. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-3686?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-3686 published?: CVE-2016-3686 was published on 2016-04-13 and last updated on 2026-06-17.

References

Affected products (18)

cpe:2.3:a:f5:big-ip_edge_gateway:11.0.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:11.1.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:11.2.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:11.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:11.3.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.0.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.1.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.2.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.3.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.4.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.4.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.5.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.5.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.5.3:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.5.4:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.6.0:*:*:*:*:*:*:*

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