Zero-Day Advisory

Fortinet Discovers Bitdefender Local Privilege Escalation Vulnerability


Fortinet's FortiGuard Labs has discovered a local Privilege Escalation vulnerability in Bitdefender.

Bitdefender is an Anti-Virus product for business and personal use. It's developed by Bitdefender company.

A local privilege escalation vulnerability has been discovered in Bitdefender's products. The vulnerability exists in its AVC3 driver (avc3.sys) and it can be reproduced by chaining multiple calls to IOCTL code 0x2222F4 that could result in Null memory dereference which could lead to escalation of privilege of non-administrative account upon successful exploitation


Users should apply the solution provided by Bitdefender.

Additional Information

Fortinet reported the vulnerability to Bitdefender on April 20, 2017.

Bitdefender patched the vulnerability on September 12, 2017.


This vulnerability was discovered by Wayne Low of Fortinet's FortiGuard Labs.

IPS Subscription

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this vulnerability with the appropriate configuration parameters in place. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by FortiGuard Labs, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.