CVE-2026-21509
CISA 기관 조치 기한: 2026-02-16
Microsoft Office
Qualys 위협 인텔 · 심각도 3/5 · QID 110516 · Office Application
공개 익스플로잇
실제 공격 관측
측면이동
쉬운 악용
대량 데이터 유출
서비스 거부
악성코드 연계
CISA KEV
Microsoft Office contains a security feature bypass vulnerability in which reliance on untrusted inputs in a security decision in Microsoft Office could allow an unauthorized attacker to bypass a security feature locally. Some of the impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.
KEV 필수 조치: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
벡터: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H