How severe is CVE-2019-6656?

CVE-2019-6656 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-6656 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6656?

CVE-2019-6656 primarily affects F5 Big-ip Access Policy Manager. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6656?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-6656 published?

CVE-2019-6656 was published on 2019-09-25 and last updated on 2026-06-17.

CVE-2019-6656

CVE-2019-6656 is a high-severity vulnerability in F5 Big-ip Access Policy Manager with a CVSS 3.x base score of 7.5. 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-532.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: F5 Big-ip Access Policy Manager
Published: 2019-09-25
Last modified: 2026-06-17

Description

BIG-IP APM Edge Client before version 7.1.8 (7180.2019.508.705) logs the full apm session ID in the log files. Vulnerable versions of the client are bundled with BIG-IP APM versions 15.0.0-15.0.1, 14,1.0-14.1.0.6, 14.0.0-14.0.0.4, 13.0.0-13.1.1.5, 12.1.0-12.1.5, and 11.5.1-11.6.5. In BIG-IP APM 13.1.0 and later, the APM Clients components can be updated independently from BIG-IP software. Client version 7.1.8 (7180.2019.508.705) and later has the fix.

Frequently asked questions

What is CVE-2019-6656?: BIG-IP APM Edge Client before version 7.1.8 (7180.2019.508.705) logs the full apm session ID in the log files. Vulnerable versions of the client are bundled with BIG-IP APM versions 15.0.0-15.0.1, 14,1.0-14.1.0.6, 14.0.0-14.0.0.4, 13.0.0-13.1.1.5, 12.1.0-12.1.5, and 11.5.1-11.6.5. In BIG-IP APM 13.1.0 and later, the APM Clients components can be updated independently from BIG-IP software. Client version 7.1.8 (7180.2019.508.705) and later has the fix.
How severe is CVE-2019-6656?: CVE-2019-6656 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-6656 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6656?: CVE-2019-6656 primarily affects F5 Big-ip Access Policy Manager. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6656?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-6656 published?: CVE-2019-6656 was published on 2019-09-25 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager_client:*:*:*:*:*:*:*:*

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