How severe is CVE-2021-23876?

CVE-2021-23876 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-23876 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23876?

CVE-2021-23876 affects Mcafee Total Protection. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23876?

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-2021-23876 published?

CVE-2021-23876 was published on 2021-02-10 and last updated on 2026-06-17.

CVE-2021-23876

CVE-2021-23876 is a high-severity vulnerability in Mcafee Total Protection with a CVSS 3.x base score of 7.8. 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Mcafee Total Protection
Published: 2021-02-10
Last modified: 2026-06-17

Description

Bypass Remote Procedure call in McAfee Total Protection (MTP) prior to 16.0.30 allows a local user to gain elevated privileges and perform arbitrary file modification as the SYSTEM user potentially causing Denial of Service via executing carefully constructed malware.

Frequently asked questions

What is CVE-2021-23876?: Bypass Remote Procedure call in McAfee Total Protection (MTP) prior to 16.0.30 allows a local user to gain elevated privileges and perform arbitrary file modification as the SYSTEM user potentially causing Denial of Service via executing carefully constructed malware.
How severe is CVE-2021-23876?: CVE-2021-23876 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-23876 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23876?: CVE-2021-23876 affects Mcafee Total Protection. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23876?: 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-2021-23876 published?: CVE-2021-23876 was published on 2021-02-10 and last updated on 2026-06-17.

References

http://service.mcafee.com/FAQDocument.aspx?&id=TS103114

Affected products (1)

cpe:2.3:a:mcafee:total_protection:*:*:*:*:*:*:*:*

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