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

Quick assessment

Affected
Microsoft Microsoft Bing
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Bing是美国微软（Microsoft）公司的一款网络搜索引擎。 Microsoft Bing存在代码问题漏洞，该漏洞源于反序列化不可信数据，可能导致未经授权的攻击者通过网络执行代码。

CVSS 10.0 · Critical EPSS 1.53% · P74

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Microsoft Microsoft Bing - affected
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I. Basic Information for CVE-2026-33819

Vulnerability Information
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Vulnerability Title
Microsoft Bing Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Bing 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Bing是美国微软（Microsoft）公司的一款网络搜索引擎。 Microsoft Bing存在代码问题漏洞，该漏洞源于反序列化不可信数据，可能导致未经授权的攻击者通过网络执行代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft Bing - -

II. Public POCs for CVE-2026-33819

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III. Intelligence Information for CVE-2026-33819

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Same Patch Batch · Microsoft · 2026-04-23 · 7 CVEs total

CVE-2026-35431 10.0 CRITICAL Microsoft Entra ID Entitlement Management Spoofing Vulnerability
CVE-2026-24303 9.6 CRITICAL Microsoft Partner Center Elevation of Privilege Vulnerability
CVE-2026-33102 9.3 CRITICAL Microsoft 365 Copilot Elevation of Privilege Vulnerability
CVE-2026-32210 9.3 CRITICAL Microsoft Dynamics 365 (online) Spoofing Vulnerability
CVE-2026-26150 8.6 HIGH Microsoft Purview eDiscovery Elevation of Privilege Vulnerability
CVE-2026-32172 8.0 HIGH Microsoft Power Apps Remote Code Execution Vulnerability

IV. Related Vulnerabilities

Same product: Microsoft Bing
Same vendor: Microsoft
Same weakness: CWE-502

V. Comments for CVE-2026-33819

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