CVE-2026-70242

CVE Enrichment

CVSS: 9.8 CRITICAL
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: secure@microsoft.com
Published: 14-Oct-2026 02:19
Last Modified: 14-Oct-2026 04:18
CWE: CWE-122

CVSS Vector


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

References

secure@microsoft.com

Last enrichment sync: 14-Oct-2026 08:09
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (3)

CVE-2026-70242 Microsoft October 2026 Updates Fix 1,411 Flaws, Including Three Zero-Days
One vulnerability that Automox researchers also flagged is a critical Reading Pane RCE in Outlook, tracked as CVE-2026-70242 (CVSS 9.8). Microsoft’s October 2026 Patch Tuesday Fixes 1,413 CVEs, Including Two Zero-Days
Microsoft Outlook alone accounts for five critical RCE vulnerabilities this month, including CVE-2026-70242 and CVE-2026-70291, reinforcing email as a persistent high-value attack vector. Microsoft’s October 2026 Patch Tuesday Fixes 1,413 Vulnerabilities, Including an Exploited Zero-Day

CVE (1237)

People (7)

MITRE ATT&CK (1)

Vendors (14)

Products (106)

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.