How severe is CVE-2020-7278?

CVE-2020-7278 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-7278 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-7278?

CVE-2020-7278 primarily affects Mcafee Endpoint Security. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-7278?

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-2020-7278 published?

CVE-2020-7278 was published on 2020-04-15 and last updated on 2026-06-17.

CVE-2020-7278

CVE-2020-7278 is a high-severity vulnerability in Mcafee Endpoint Security with a CVSS 3.x base score of 7.4. 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-862.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 4.0
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Mcafee Endpoint Security
Published: 2020-04-15
Last modified: 2026-06-17

Description

Exploiting incorrectly configured access control security levels vulnerability in ENS Firewall in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 April 2020 and 10.6.1 April 2020 updates allows remote attackers and local users to allow or block unauthorized traffic via pre-existing rules not being handled correctly when updating to the February 2020 updates.

Frequently asked questions

What is CVE-2020-7278?: Exploiting incorrectly configured access control security levels vulnerability in ENS Firewall in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 April 2020 and 10.6.1 April 2020 updates allows remote attackers and local users to allow or block unauthorized traffic via pre-existing rules not being handled correctly when updating to the February 2020 updates.
How severe is CVE-2020-7278?: CVE-2020-7278 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-7278 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-7278?: CVE-2020-7278 primarily affects Mcafee Endpoint Security. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-7278?: 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-2020-7278 published?: CVE-2020-7278 was published on 2020-04-15 and last updated on 2026-06-17.

References

https://kc.mcafee.com/corporate/index?page=content&id=SB10309

Affected products (7)

cpe:2.3:a:mcafee:endpoint_security:10.5.0:*:*:*:*:windows:*:*
cpe:2.3:a:mcafee:endpoint_security:10.5.1:*:*:*:*:windows:*:*
cpe:2.3:a:mcafee:endpoint_security:10.5.2:*:*:*:*:windows:*:*
cpe:2.3:a:mcafee:endpoint_security:10.5.3:*:*:*:*:windows:*:*
cpe:2.3:a:mcafee:endpoint_security:10.5.4:*:*:*:*:windows:*:*
cpe:2.3:a:mcafee:endpoint_security:10.5.5:*:*:*:*:windows:*:*
cpe:2.3:a:mcafee:endpoint_security:10.6.0:*:*:*:*:windows:*:*

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