The vulnerability of microprogrammed software in Schneider Electric’s programmable logic controllers Modicon M221, M100, and M200 lies in the small number of possible random values. This allows attackers to circumvent existing security restrictions by using brute-force attacks.

The vulnerability of the microprogrammed logic controllers from Schneider Electric, such as Modicon M221, M100, and M200, is related to the small number of possible random values. Exploiting this vulnerability can allow a malicious actor to bypass existing security restrictions by using brute-for...