BlackTreeIndependent security intelligenceMicrosoft · Microsoft 365 Apps for Enterprise
Low technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Low technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.
Fix not verifiedProtection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
Protection mechanism failure in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally.
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
CWE-693: Protection Mechanism Failure. The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:CCommon Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
Operational remediation based on structured source evidence.
Published 9 Jun 2026 · Last source change 25 Aug 2026, 22:43 UTC · CWE-693 · Protection Mechanism Failure
Core structured fields are present and their contributing authorities are shown above.
No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.