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CVE-2026-96940

Microsoft Exchange Server Elevation of Privilege Vulnerability

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 15.01.2507.075, 15.02.1544.048, 15.02.1748.053, 15.02.2562.053
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Microsoft Microsoft Exchange Server 2016 Cumulative Update 23

    From 15.01.0.0 · fixed in 15.01.2507.075

  • Microsoft Microsoft Exchange Server 2019 Cumulative Update 14

    From 15.02.0.0 · fixed in 15.02.1544.048

  • Microsoft Microsoft Exchange Server 2019 Cumulative Update 15

    From 15.02.0.0 · fixed in 15.02.1748.053

  • Microsoft Microsoft Exchange Server Subscription Edition RTM

    From 15.02.0.0 · fixed in 15.02.2562.053

References 2

msrc.microsoft.com

GitHub · HORKimhab/CVE-2026-96940