CVE-2021-3641 Improper Link Resolution Before File Access in Bitdefender GravityZone (VA-9921)
A local attacker can cause a denial of service in Bitdefender Endpoint Security Tools via improper link resolution.
- 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-2021-3641?
CVE-2021-3641 is a medium-severity path traversal vulnerability in Bitdefender GravityZone, published on 9 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper Link Resolution Before File Access ('Link Following') vulnerability in the EPAG component of Bitdefender Endpoint Security Tools for Windows allows a local attacker to cause a denial of service. This issue affects: Bitdefender GravityZone version 7.1.2.33 and prior versions.
Weakness: CWE-59
Which versions are affected by CVE-2021-3641?
It affects 1 product.
Products include Bitdefender Gravityzone.
How do I fix CVE-2021-3641?
No fix has been published for CVE-2021-3641 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-3641 being exploited?
There is no known exploitation of CVE-2021-3641 in the wild and no public exploit code.
Other vulnerabilities in Bitdefender GravityZone
- CVE-2017-8931 Privilege escalation in n/a
- CVE-2018-8955 Code injection in n/a
- CVE-2025-2244 Insecure PHP deserialization issue in GravityZone Console (VA-12634)
- CVE-2024-6980 Verbose error handling issue in GravityZone Update Server proxy service
- CVE-2022-2830 Deserialization of Untrusted Data in GravityZone Console On-Premise (VA-10573)
Sources
Also known as GHSA-mg9g-xrgm-6mf3.