What is CVE-2026-96185?

CVE-2026-96185 is a high-severity vulnerability in Microsoft Exchange Online, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-10-22.

How severe is CVE-2026-96185?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Microsoft Exchange Online

CVE-2026-96185

Stack-based buffer overflow in Microsoft Exchange Online allows an authorized attacker to execute code over a network.

Vulnerability class: Buffer Overflow

Published 2026-10-22 · last modified 2026-10-23.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Microsoft Exchange Online

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

Microsoft Exchange Online Remote Code Execution Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-96185?: CVE-2026-96185 is a high-severity vulnerability in Microsoft Exchange Online, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-10-22.
How severe is CVE-2026-96185?: High severity. CVSS v3 base score is 7.5 out of 10.