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Microsoft CVE-2026-33819

| EUVD-2026-25311 CRITICAL
Deserialization of Untrusted Data (CWE-502)
2026-04-23 microsoft GHSA-97j9-4xhc-69qj
10.0
CVSS 3.1 · NVD
Temporal: 8.7
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Severity by source

NVD PRIMARY
10.0 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CIRCL (temporal)
8.7 HIGH
cvss

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
EUVD ID Assigned
Apr 23, 2026 - 22:15 euvd
EUVD-2026-25311
Patch released
Apr 23, 2026 - 22:15 nvd
Patch available
CVE Published
Apr 23, 2026 - 21:35 nvd
CRITICAL 10.0

DescriptionCVE.org

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

Analysis

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

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CVE-2026-33819 vulnerability details – vuln.today

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