CVE-2026-78507

Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

CVSS v3.1

8.8 HIGH

EPSS

0.59%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Intelligence Reports1

1 intelligence report available

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CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

ScopeUNCHANGED

ConfidentialityHIGH

IntegrityHIGH

AvailabilityHIGH

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

Connections

6 relationships

Timeline

disclosure → media coverage

Sep 8, 2026

Disclosure — published as a CVE record.