Critical vulnerability impacts Bitcoin Cash miners

On Monday, Bitcoin ABC said in a security advisory that a critical vulnerability has been found in Bitcoin ABC version 0.17.0 which has the potential to cause an unintended split in the Bitcoin Cash network. In order to exploit the vulnerability, an attacker would need to construct a malicious transaction which could be accepted into Bitcoin ABC and consequently mined into a block. Once this block has been established, the block would then reject all other versions of Bitcoin Cash compliant implementations.

Source: zdnet.com