This paper presents a comprehensive review of the emerging threat landscape targeting voice authentication systems (VAS) and anti-spoofing countermeasures (CMs). Voice authentication has advanced significantly, from traditional systems relying on handcrafted acoustic features to deep learning models capable of extracting robust speaker embeddings. However, this increased adoption has also led to a rise in threats. This paper chronologically traces the evolution of voice authentication and examines how vulnerabilities have evolved alongside technological advancements. For each attack type, we summarize methodologies, highlight commonly used datasets, compare performance and limitations, and organize the existing literature using a widely accepted taxonomy. By highlighting emerging risks and unresolved challenges, we aim to support the development of more secure and resilient voice authentication systems. Attack types covered include data poisoning, adversarial attacks, deepfakes, and adversarial spoofing attacks.