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High severity8.8NVD Advisory· Published Oct 14, 2025· Updated Jun 15, 2026

CVE-2025-59249

CVE-2025-59249

Description

Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Affected products

5

Microsoft/Exchange Serverllm-fuzzy2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: 15.02.0.0
Microsoft/Microsoft Exchange Server 2016 Cumulative Update 23v5
Range: 15.01.0.0
Microsoft/Microsoft Exchange Server 2019 Cumulative Update 14v5
Range: 15.02.0.0
Microsoft/Microsoft Exchange Server 2019 Cumulative Update 15v5
Range: 15.02.0.0

Patches

Vulnerability mechanics

References

1

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59249nvdVendor Advisory

News mentions

0

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