A few isolated bright pixels are usually not a serious fault. They may be hot, stuck, or dead pixels, and some are normal on digital sensors. Cameras typically maintain a pixel map to suppress known bad pixels, and RAW converters often remove them automatically.

For photos you already have, the easiest fix is retouching in post:

• In Lightroom, use the Healing tool and click the pixel.
• In Photoshop or similar editors, use Clone/Heal to paint over it from nearby texture.

If you shoot RAW, check your software first—Lightroom/Adobe Camera Raw may already correct these automatically on import.

So: this is frustrating, but it’s common and usually easy to fix. If the same bright pixels become frequent or widespread across many images, it may be worth having the camera checked, but a few visible ones in isolated frames is generally expected behavior.