A vulnerability in PyTorch's Quantized Sigmoid Module (nnq_Sigmoid) affects versions 2.6.0 up to but not including 2.7.0. The issue involves improper initialization caused by manipulation of the scale and zero_point arguments. Exploitation requires local access and is considered difficult due to high attack complexity. The vulnerability has been publicly disclosed, but no known exploits are reported in the wild. A patch is available to address this issue.