CVE-2026-55007

CVE Enrichment

CVSS: 8.1 HIGH
EPSS: 0.71%
EPSS Percentile: 52.84%
CISA KEV: Not listed

Description

Double free in Microsoft Exchange Server allows an unauthorized attacker to execute code over a network.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 09-Sep-2026 01:17
Last Modified: 06-Oct-2026 00:11
EPSS Date: 2026-10-21
CWE: CWE-415

CVSS Vector


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

Affected Products / Versions

microsoft / exchange_server
Version / affected range: 2019
cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_14:*:*:*:*:*:*
microsoft / exchange_server
Version / affected range: 2019
cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_15:*:*:*:*:*:*
microsoft / exchange_server_subscription_edition
Version / affected range: * · before (exclusive) 15.02.2562.049
cpe:2.3:a:microsoft:exchange_server_subscription_edition:*:*:*:*:*:*:*:*

References

[email protected]

Last enrichment sync: 22-Oct-2026 10:34
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

Some of the issues that deserve special attention include CVE-2026-55007 (remote code execution (RCE) in Exchange Server), CVE-2026-80097 (elevation of privilege (EoP) in Authenticator), CVE-2026-69465 (RCE in Microsoft Patches 974 Vulnerabilities, Including Two Exploited Zero-Days

CVE (6)

People (3)

Vendors (1)

Products (13)

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.