CVE-2021-36724 ForeScout - SecureConnector Local Service DoS
A local low-privileged user can crash the SecureConnector service by writing excessive characters to the installation path, causing a buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-36724?
CVE-2021-36724 is a medium-severity memory corruption vulnerability in ForeScout eServices / eNvoice, published on 29 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ForeScout - SecureConnector Local Service DoS - A low privilaged user which doesn't have permissions to shutdown the secure connector service writes a large amount of characters in the installationPath. This will cause the buffer to overflow and override the stack cookie causing the service to crash.
Weakness: CWE-120
Which versions are affected by CVE-2021-36724?
It affects 1 product.
Products include Forescout Secureconnector.
How do I fix CVE-2021-36724?
No fix has been published for CVE-2021-36724 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-36724 being exploited?
There is no known exploitation of CVE-2021-36724 in the wild and no public exploit code.
Other vulnerabilities in ForeScout eServices / eNvoice
- CVE-2025-4660 Remote Code Execution in Windows Secure Connector/ HPS Inspection Engine via Insecure Named Pipe Access
- CVE-2024-9950 Abuse of Unauthenticated Compliance Recheck in SecureConnector
- CVE-2023-39374 ForeScout NAC SecureConnector – CWE-427: Uncontrolled Search Path Element
- CVE-2016-9485 Privilege escalation in Windows SecureConnector agent
- CVE-2016-9486 Privilege escalation in Windows SecureConnector agent
Sources
Also known as GHSA-cvrj-cr4m-fg2f.