How severe is CVE-2021-31844?

CVE-2021-31844 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-31844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31844?

CVE-2021-31844 affects Mcafee Data Loss Prevention Endpoint. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31844?

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-2021-31844 published?

CVE-2021-31844 was published on 2021-09-17 and last updated on 2026-06-17.

CVE-2021-31844

CVE-2021-31844 is a high-severity vulnerability in Mcafee Data Loss Prevention Endpoint with a CVSS 3.x base score of 8.2. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v2: 4.6
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Mcafee Data Loss Prevention Endpoint
Published: 2021-09-17
Last modified: 2026-06-17

Description

A buffer overflow vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows prior to 11.6.200 allows a local attacker to execute arbitrary code with elevated privileges through placing carefully constructed Ami Pro (.sam) files onto the local system and triggering a DLP Endpoint scan through accessing a file. This is caused by the destination buffer being of fixed size and incorrect checks being made on the source size.

Frequently asked questions

What is CVE-2021-31844?: A buffer overflow vulnerability in McAfee Data Loss Prevention (DLP) Endpoint for Windows prior to 11.6.200 allows a local attacker to execute arbitrary code with elevated privileges through placing carefully constructed Ami Pro (.sam) files onto the local system and triggering a DLP Endpoint scan through accessing a file. This is caused by the destination buffer being of fixed size and incorrect checks being made on the source size.
How severe is CVE-2021-31844?: CVE-2021-31844 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-31844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31844?: CVE-2021-31844 affects Mcafee Data Loss Prevention Endpoint. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31844?: 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-2021-31844 published?: CVE-2021-31844 was published on 2021-09-17 and last updated on 2026-06-17.

References

https://kc.mcafee.com/corporate/index?page=content&id=SB10368

Affected products (1)

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

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