CVE-2026-10631

CVE Enrichment

CVSS: 6.5 MEDIUM
EPSS: 0.21%
EPSS Percentile: 10.87%
CISA KEV: Not listed

Description

An authorization bypass in the EWS FindItem handler of Zimbra Collaboration Suite 10.1.0 through 10.1.19 allows an authenticated user with EWS enabled to read complete mailbox items, including raw MIME and attachments, from arbitrary local accounts without a share or delegation grant.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: cve@rapid7.com
Published: 09-Oct-2026 00:17
Last Modified: 09-Oct-2026 03:49
EPSS Date: 2026-10-16
CWE: CWE-639

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:L /
                            UI:N /
                            S:U /
                            C:H /
                            I:N /
                            A:N

References

cve@rapid7.com

Last enrichment sync: 17-Oct-2026 11:01
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

EWS cross-user mailbox access (CVE-2026-10631) Rapid7 details five Zimbra flaws enabling password guessing, email impersonation, mailbox access and mail exfiltration

CVE (4)

People (1)

MITRE ATT&CK (5)

Vendors (1)

Products (2)

Tools (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.