Remote Code Execution Vulnerability in Microsoft Bing
CVE-2026-33819

10CRITICAL

Key Information:

Vendor

Microsoft
Status
Microsoft Bing
Vendor
CVE Published:
23 April 2026

What is CVE-2026-33819?

A security flaw in Microsoft Bing identifies a deserialization issue involving untrusted data, enabling unauthorized attackers to execute arbitrary code remotely over a network. This vulnerability poses significant risks, potentially allowing attackers to compromise systems and access sensitive information. Ensuring security patches are applied promptly is crucial to mitigating potential attacks stemming from this vulnerability.

Affected Version(s)

Microsoft Bing -

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.