CVE-2021-33766 Microsoft Exchange - Authentication Bypass · CloudMap

高危CVE-2021-33766

Microsoft Exchange - Authentication Bypass

披露于 2021/07/14 · 更新于 2026/07/25

CVSS 评分7.3/ 10.0

EPSS 概率93.6%百分位 99.8%

漏洞描述

Microsoft Exchange Server Information Disclosure Vulnerability

影响产品

微软公司Microsoft Exchange Server查看产品 →

修复建议

建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。

参考链接

www.zerodayinitiative.comhttps://www.zerodayinitiative.com/advisories/ZDI-21-798/↗portal.msrc.microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33766↗

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同产品关联漏洞

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漏洞与影响对象	风险等级	CVSS	EPSS	利用情报	披露时间
ms_exchange_user_enum Microsoft Exchange Autodiscover - User Enumeration Microsoft Exchange Server	低危	—	—	PoCEXP	2024/07/04
ms_exchange_local_domain Microsoft Exchange Autodiscover - Local Domain Exposure Microsoft Exchange Server	低危	—	—	PoCEXP	2024/05/13
CVE-2021-41349 Microsoft Exchange Server Pre-Auth POST Based Cross-Site Scripting Microsoft Exchange Server	中危	6.5	91.4%	PoCEXP	2021/11/09
CVE-2021-34473RCE Exchange Server - Remote Code Execution Microsoft Exchange Server	严重	9.1	94.2%	PoCEXP	2021/07/13
CVE-2021-31195 Microsoft Exchange Server - Cross-Site Scripting Microsoft Exchange Server	中危	6.5	75.4%	PoCEXP	2021/05/11
CVE-2021-28481 Microsoft Exchange - Pre-Auth SSRF / ACL Bypass (ProxyNotFound) Microsoft Exchange Server	严重	9.8	—	PoCEXP	2021/04/13