CVE-2026-21527

CWE-451CWE-345CWE-1286CWE-22 — Path TraversalCWE-918 — Server-Side Request Forgery (SSRF)5 documents4 sources
Severity
6.5MEDIUM
No vector
EPSS
0.1%
top 76.34%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Microsoft Microsoft Exchange Server 2016 Cumulative Update 23Microsoft Microsoft Exchange Server 2019 Cumulative Update 14Microsoft Microsoft Exchange Server 2019 Cumulative Update 15+1 more
Timeline
PublishedFeb 10
Latest updateMar 30

Description

Microsoft Exchange Server Spoofing Vulnerability User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Affected Packages4 packages

▶CVEListV5microsoft/microsoft_exchange_server_subscription_edition_rtm15.02.0.0 — 15.02.2562.037

🔴Vulnerability Details

2
GHSA
Gotenberg has Chromium deny-list bypass via case-insensitive URL scheme (bypass of GHSA-rh2x-ccvw-q7r3)↗2026-03-30
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CVEList
Microsoft Exchange Server Spoofing Vulnerability↗2026-02-10
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📋Vendor Advisories

1
Microsoft
Microsoft Exchange Server Spoofing Vulnerability↗2026-02-10
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🕵️Threat Intelligence

1
Wiz
CVE-2026-21527 Impact, Exploitability, and Mitigation Steps | Wiz↗
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