How severe is CVE-2019-11816?

CVE-2019-11816 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-11816 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11816?

CVE-2019-11816 primarily affects Netgate Pfsense. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-11816?

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-2019-11816 published?

CVE-2019-11816 was published on 2019-05-20 and last updated on 2026-06-17.

CVE-2019-11816

CVE-2019-11816 is a high-severity vulnerability in Netgate Pfsense with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Netgate Pfsense
Published: 2019-05-20
Last modified: 2026-06-17

Description

Incorrect access control in the WebUI in OPNsense before version 19.1.8, and pfsense before 2.4.4-p3 allows remote authenticated users to escalate privileges to administrator via a specially crafted request.

Frequently asked questions

What is CVE-2019-11816?: Incorrect access control in the WebUI in OPNsense before version 19.1.8, and pfsense before 2.4.4-p3 allows remote authenticated users to escalate privileges to administrator via a specially crafted request.
How severe is CVE-2019-11816?: CVE-2019-11816 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-11816 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11816?: CVE-2019-11816 primarily affects Netgate Pfsense. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-11816?: 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-2019-11816 published?: CVE-2019-11816 was published on 2019-05-20 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:netgate:pfsense:*:*:*:*:*:*:*:*
cpe:2.3:a:netgate:pfsense:2.4.4:p1:*:*:*:*:*:*
cpe:2.3:a:netgate:pfsense:2.4.4:p2:*:*:*:*:*:*
cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*

More vulnerabilities in Netgate Pfsense

CVE-2019-16915 — Critical (CVSS 9.8): An issue was discovered in pfSense through 2.4.4-p3. widgets/widgets/picture.widget.php uses the widgetkey parameter…
CVE-2019-12585 — Critical (CVSS 9.8): Apcupsd 0.3.91_5, as used in pfSense through 2.4.4-RELEASE-p3 and other products, has an Arbitrary Command Execution…
CVE-2020-21487 — Critical (CVSS 9.6): Cross Site Scripting vulnerability found in Netgate pfSense 2.4.4 and ACME package v.0.6.3 allows attackers to execute…
CVE-2023-48123 — High (CVSS 8.8): An issue in Netgate pfSense Plus v.23.05.1 and before and pfSense CE v.2.7.0 allows a remote attacker to execute…
CVE-2023-42326 — High (CVSS 8.8): An issue in Netgate pfSense v.2.7.0 allows a remote attacker to execute arbitrary code via a crafted request to the…
CVE-2023-27253 — High (CVSS 8.8): A command injection vulnerability in the function restore_rrddata() of Netgate pfSense v2.7.0 allows authenticated…

All CVEs affecting Netgate Pfsense →