SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-31840

A vulnerability in the preloading mechanism of specific dynamic link libraries in McAfee Agent for Windows prior to 5.7.3 could allow an authenticated, local attacker to perform a DLL preloading attack with unsigned DLLs.

HIGH 7.3EPSS 0.35%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A vulnerability in the preloading mechanism of specific dynamic link libraries in McAfee Agent for Windows prior to 5.7.3 could allow an authenticated, local attacker to perform a DLL preloading attack with unsigned DLLs. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. This would result in the user gaining elevated permissions and being able to execute arbitrary code.

CVSS 3.1
7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS
0.35% probability · 28th percentile
CISA KEV
Not listed
Weakness
CWE-427
Affected
mcafee/mcafee agent
Source
trellixpsirt@trellix.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.