CVE-2021-31845: Remote Code Execution in McAfee DLP Discover

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-09-17 · updated 2026-06-17
Weakness: CWE-120

Description

A buffer overflow vulnerability in McAfee Data Loss Prevention (DLP) Discover prior to 11.6.100 allows an attacker in the same network as the DLP Discover to execute arbitrary code through placing carefully constructed Ami Pro (.sam) files onto a machine and having DLP Discover scan it, leading to remote code execution with elevated privileges. This is caused by the destination buffer being of fixed size and incorrect checks being made on the source size.

Affected products

McAfee,LLC McAfee Data Loss Prevention (DLP) Discover: before 11.6.100; from 11.7.0 before 11.7.100 — fixed in 11.6.100, 11.7.100

How to fix

Upgrade to a fixed version: McAfee,LLC McAfee Data Loss Prevention (DLP) Discover 11.6.100, 11.7.100. Check the vendor advisory for mitigations.

References

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