Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.

A critical deserialization vulnerability in Microsoft Bing allows unauthorized attackers to execute arbitrary code remotely over a network. The vulnerability stems from improper handling of untrusted data during deserialization processes. This represents a significant security risk as it enables remote code execution without authentication. The vulnerability affects Microsoft's Bing search service infrastructure. Given the widespread use of Bing services, this vulnerability could have broad impact if exploited.