Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
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Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-24. NVD baseline CVSS 10.0; sources differ by 0.0.
Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
April 23, 2026
May 5, 2026
Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33819MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
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msrc
CWE-502