Vulnerability · Published Oct 22, 2026 · Assigned by microsoft
CVE-2026-96185Microsoft Exchange Online Remote Code Execution Vulnerability
High 7.5
In plain English
A high-severity stack buffer overflow in Microsoft Exchange Online from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 54.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Stack-based buffer overflow in Microsoft Exchange Online allows an authorized attacker to execute code over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Online | - |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft Exchange Online Remote Code Execution Vulnerability vendor-advisory, patch