How severe is CVE-2019-6636?

CVE-2019-6636 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-6636 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6636?

CVE-2019-6636 primarily affects F5 Big-ip Advanced Firewall 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-2019-6636?

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-2019-6636 published?

CVE-2019-6636 was published on 2019-07-03 and last updated on 2026-06-17.

CVE-2019-6636

CVE-2019-6636 is a high-severity vulnerability in F5 Big-ip Advanced Firewall Manager with a CVSS 3.x base score of 8.4. 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-79.

Key facts

Severity: High (CVSS 3.x base score 8.4)
CVSS v2: 8.5
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: F5 Big-ip Advanced Firewall Manager
Published: 2019-07-03
Last modified: 2026-06-17

Description

On BIG-IP (AFM, ASM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, 12.1.0-12.1.4, and 11.5.1-11.6.4, a stored cross-site scripting vulnerability in AFM feed list. In the worst case, an attacker can store a CSRF which results in code execution as the admin user. The level of user role which can perform this attack are resource administrator and administrator.

Frequently asked questions

What is CVE-2019-6636?: On BIG-IP (AFM, ASM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, 12.1.0-12.1.4, and 11.5.1-11.6.4, a stored cross-site scripting vulnerability in AFM feed list. In the worst case, an attacker can store a CSRF which results in code execution as the admin user. The level of user role which can perform this attack are resource administrator and administrator.
How severe is CVE-2019-6636?: CVE-2019-6636 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-6636 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6636?: CVE-2019-6636 primarily affects F5 Big-ip Advanced Firewall 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-2019-6636?: 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-2019-6636 published?: CVE-2019-6636 was published on 2019-07-03 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*

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