Riskcovery

CVE-2026-62912

Microsoft Exchange Server Denial of Service Vulnerability

State
Published
Severity
6.5 Medium
Published
Aug 11, 2026
Updated
Oct 30, 2026
Reserved
Jul 14, 2026

Read the record on cve.org

Description

Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.

Scores

CVSSScoreVectorSource
3.16.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:Cmicrosoft

Weaknesses

  • CWE-502 Deserialization of Untrusted Data

Affected Products

ProductVersions
Microsoft Exchange Server 2016 Cumulative Update 23Microsoft
  • 15.01.0.0 to before 15.01.2507.072Affected
Microsoft Exchange Server 2019 Cumulative Update 14Microsoft
  • 15.02.0.0 to before 15.02.1544.044Affected
Microsoft Exchange Server 2019 Cumulative Update 15Microsoft
  • 15.02.0.0 to before 15.02.1748.049Affected
Microsoft Exchange Server Subscription Edition RTMMicrosoft
  • 15.02.0.0 to before 15.02.2562.046Affected

References

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