CVE-2026-110043

CVE Enrichment

CVSS: 8.8 HIGH
CISA KEV: Not listed

Description

Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 11-Nov-2026 02:18
Last Modified: 11-Nov-2026 04:18
CWE: CWE-122

CVSS Vector


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

CNA Products / Version Status

Microsoft · Microsoft 365 Apps for Enterprise Source: CNA · [email protected]
Default status: unknown

16.0.1 ≤ version < https://aka.ms/OfficeSecurityReleases — affected (custom)

Platforms: 32-bit Systems, x64-based Systems
Microsoft · Microsoft Office LTSC 2021 Source: CNA · [email protected]
Default status: unknown

16.0.1 ≤ version < 16.0.14334.21048 — affected (custom)

Platforms: 32-bit Systems, x64-based Systems
Microsoft · Microsoft Office LTSC 2024 Source: CNA · [email protected]
Default status: unknown

16.0.0 ≤ version < 16.0.17932.21140 — affected (custom)

Platforms: 32-bit Systems, x64-based Systems

References

[email protected]

Last enrichment sync: 11-Nov-2026 07:16
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

Another critical RCE to watch out for, according to Automox, is CVE-2026-110043 (CVSS 8.8/10), a one-click heap-based buffer overflow in Outlook that uses the Preview Pane as an attack vector. A target must select a Microsoft’s November Patch Tuesday Addresses 1,093 Vulnerabilities, Including an Actively Exploited Zero-Day

CVE (5)

People (4)

Vendors (1)

Products (6)

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.