How severe is CVE-2019-3643?

CVE-2019-3643 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2019-3643 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-3643?

CVE-2019-3643 primarily affects Mcafee Active Response. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-3643?

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

When was CVE-2019-3643 published?

CVE-2019-3643 was published on 2019-09-11 and last updated on 2026-06-17.

CVE-2019-3643

CVE-2019-3643 is a medium-severity vulnerability in Mcafee Active Response with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Mcafee Active Response
Published: 2019-09-11
Last modified: 2026-06-17

Description

McAfee Web Gateway (MWG) earlier than 7.8.2.13 is vulnerable to a remote attacker exploiting CVE-2019-9511, potentially leading to a denial of service. This affects the scanning proxies.

Frequently asked questions

What is CVE-2019-3643?: McAfee Web Gateway (MWG) earlier than 7.8.2.13 is vulnerable to a remote attacker exploiting CVE-2019-9511, potentially leading to a denial of service. This affects the scanning proxies.
How severe is CVE-2019-3643?: CVE-2019-3643 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2019-3643 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-3643?: CVE-2019-3643 primarily affects Mcafee Active Response. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-3643?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-3643 published?: CVE-2019-3643 was published on 2019-09-11 and last updated on 2026-06-17.

References

https://kc.mcafee.com/corporate/index?page=content&id=SB10296

Affected products (22)

cpe:2.3:a:mcafee:active_response:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:active_response:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:active_response:2.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:active_response:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:active_response:2.1:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:active_response:2.2:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:active_response:2.3:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:active_response:2.4:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:advanced_threat_defense:4.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:advanced_threat_defense:4.2:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:advanced_threat_defense:4.4:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:advanced_threat_defense:4.6:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:10.2.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:10.3.4:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:10.4.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:11.0.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:11.1.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:11.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:11.1.2:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:11.1.3:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:enterprise_security_manager:11.2.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*

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