CVE-2026-1100438.8High
CVE-2026-110043: Microsoft Office Outlook Remote Code Execution Vulnerability
Microsoft · Microsoft 365 Apps for Enterprise
Vendor fix available · Affected: Microsoft 365 Apps for Enterprise · Exploitation: not established
ExploitationNot established
Not in CISA KEV as of catalogue 2026.11.10 (10 Nov)
- In CISA KEV: not seen
- Exploited (reported): not seen
- Scanning observed: not seen
- Proof of concept public: not seen
- Not establishedNothing in the sources we check
No EPSS score yet. The score appears once FIRST publishes it.
8.8HighCVSS
LowMediumHighCrit.
DescriptionNVD
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Coverage1 article · 1 outlet
First in our coverage: Dark Reading, 10 Nov.
- Microsoft fixes 1,093 flaws as Outlook zero day remains activeDark Reading · first in our coverage · mentions it in passing
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