CVE-2026-96185
Microsoft Exchange Online Remote Code Execution Vulnerability
Microsoft Microsoft Exchange OnlineApplications & CMS
CVSS
7.5HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.54%Chance of exploitation activity in the next 30 days, higher than 44% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Vendor and government advisories 1
Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.
Reports 2
2 outlets mention it. Reports are not confirmation; each links to its source.
- 🚨 CVE-2026-96185 Stack-based buffer overflow in Microsoft Exchange Online allows an authorized attacker to execute code over a network. 🎖 @cveNotifyTelegram: CVE Notify, 24 Oct 2026
- CVE-2026-96185 Microsoft Exchange Online Remote Code Execution VulnerabilityMicrosoft Security Update Guide, 22 Oct 2026
Description
Stack-based buffer overflow in Microsoft Exchange Online allows an authorized attacker to execute code over a network.
Text from CVE List
Affected versions 1
- Microsoft Exchange Onlineaffected: -CVE List