Critical. A vulnerability whose exploitation could allow code execution without user interaction. These scenarios include self-propagating malware (e.g. network worms), or unavoidable common use scenarios where code execution occurs without warnings or prompts. This could mean browsing to a web page or opening email.
A strain is a stretching or tearing of muscle or tendon. A tendon is a fibrous cord of tissue that connects muscles to bones. Strains often occur in the lower back and in the hamstring muscle in the back of your thigh. Initial treatment for both sprains and strains includes rest, ice, compression and elevation.
A strain is an injury of a muscle and/or tendon. Tendons (fibrous cords of tissue that attach muscles to bone). Sprains and strains are among the most common injuries in sports, professional, amateur athletes and the general public. A strain is when a muscle becomes overstretched and tears. 2  This painful injury, also called a pulled muscle, can be caused by an accident, improper use of a muscle, or overuse of a muscle. 3  Frequently occur in racquet, throwing, and contact sports. 4  Shoulder strain.