How severe is CVE-2021-23886?

CVE-2021-23886 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-23886 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-23886?

CVE-2021-23886 affects Mcafee Data Loss Prevention Endpoint. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-23886?

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

When was CVE-2021-23886 published?

CVE-2021-23886 was published on 2021-04-15 and last updated on 2026-06-17.

CVE-2021-23886

CVE-2021-23886 is a medium-severity vulnerability in Mcafee Data Loss Prevention Endpoint with a CVSS 3.x base score of 5.5. 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-755.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.9
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Mcafee Data Loss Prevention Endpoint
Published: 2021-04-15
Last modified: 2026-06-17

Description

Denial of Service vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows prior to 11.6.100 allows a local, low privileged, attacker to cause a BSoD through suspending a process, modifying the processes memory and restarting it. This is triggered by the hdlphook driver reading invalid memory.

Frequently asked questions

What is CVE-2021-23886?: Denial of Service vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows prior to 11.6.100 allows a local, low privileged, attacker to cause a BSoD through suspending a process, modifying the processes memory and restarting it. This is triggered by the hdlphook driver reading invalid memory.
How severe is CVE-2021-23886?: CVE-2021-23886 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-23886 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23886?: CVE-2021-23886 affects Mcafee Data Loss Prevention Endpoint. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23886?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-23886 published?: CVE-2021-23886 was published on 2021-04-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mcafee:data_loss_prevention_endpoint:*:*:*:*:*:windows:*:*

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