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CVE-2021-28098 Details

Description

An issue was discovered in Forescout CounterACT before 8.1.4. A local privilege escalation vulnerability is present in the logging function. SecureConnector runs with administrative privileges and writes logs entries to a file in %PROGRAMDATA%\ForeScout SecureConnector\ that has full permissions for the Everyone group. Using a symbolic link allows an attacker to point the log file to a privileged location such as %WINDIR%\System32. The resulting log file adopts the file permissions of the source of the symbolic link (in this case, the Everyone group). The log file in System32 can be replaced and renamed with a malicious DLL for DLL hijacking.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://docs.forescout.com	CVE	Vendor Advisory
https://jordanpotti.com/2021/03/30/forescout-priv-esc-folder-permissions/	CVE	ExploitThird Party Advisory
https://www.adversis.io/research/2021/3/30/forescout-secure-connector-local-privilege-escalation	CVE	ExploitThird Party Advisory
https://docs.forescout.com	[email protected]	Vendor Advisory
https://jordanpotti.com/2021/03/30/forescout-priv-esc-folder-permissions/	[email protected]	ExploitThird Party Advisory
https://www.adversis.io/research/2021/3/30/forescout-secure-connector-local-privilege-escalation	[email protected]	ExploitThird Party Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-427	Uncontrolled Search Path Element	[email protected]
CWE-59	Improper Link Resolution Before File Access ('Link Following')	[email protected]
CWE-732	Incorrect Permission Assignment for Critical Resource	[email protected]

Affected Products

Product	Versions
forescout counteract	< 8.1.4
CPE cpe:2.3:a:forescout:counteract:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jun 28, 2022	CWE Remap	[email protected]
Apr 21, 2021	Initial Analysis	[email protected]