Stack-based Buffer Overflow in Microsoft Exchange Online by Microsoft
CVE-2026-96185

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Exchange Online
Vendor
CVE Published:
22 October 2026

What is CVE-2026-96185?

A stack-based buffer overflow vulnerability in Microsoft Exchange Online enables an authorized attacker to execute arbitrary code over a network. This can compromise the integrity of the affected systems, leading to unauthorized access and potential data breaches. Microsoft has acknowledged this flaw and recommends applying the latest patches to mitigate its effects.

Affected Version(s)

Microsoft Exchange Online -

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.