Out-of-band Exchange Server update fixes high-severity mailbox access bug (CVE-2026-96940)
Microsoft has pushed out an out-of-band security update for Exchange Server that fixes a high-severity vulnerability (CVE-2026-96940) that may allow authenticated attackers to read emails and attachments of other users in the same organization, but “does not allow access across tenant boundaries.”…
Sources
- T2Out-of-band Exchange Server update fixes high-severity mailbox access bug (CVE-2026-96940)Help Net Security
Vulnerabilities
Why this score
| Signal | Points |
|---|---|
| cvss high — 8.8 | 10 |
| widely deployed | 15 |