{"$ref":"https://www.cert.ssi.gouv.fr/openapi.json","affected_systems":[{"description":"Microsoft Office LTSC 2021 pour \u00e9ditions 64 bits","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Office Online Server versions ant\u00e9rieures \u00e0 16.0.10417.20083","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office LTSC 2021 pour \u00e9ditions 32 bits","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Excel 2016 (\u00e9dition 64 bits) versions ant\u00e9rieures \u00e0 16.0.5535.1000","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office 2019 pour \u00e9ditions 32 bits","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft 365 Apps pour Enterprise pour syst\u00e8mes 64 bits","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office Deployment Tool versions ant\u00e9rieures \u00e0 16.0.19426.20170","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office 2019 pour \u00e9ditions 64 bits","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office LTSC pour Mac 2024 versions ant\u00e9rieures \u00e0 16.105.26011018","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Excel 2016 (\u00e9dition 32 bits) versions ant\u00e9rieures \u00e0 16.0.5535.1000","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office 2016 (\u00e9dition 32 bits) versions ant\u00e9rieures \u00e0 16.0.5535.1000","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office LTSC 2024 pour \u00e9ditions 64 bits","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Word 2016 (\u00e9dition 64 bits) versions ant\u00e9rieures \u00e0 16.0.5535.1000","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office LTSC pour Mac 2021 versions ant\u00e9rieures \u00e0 16.105.26011018","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Word 2016 (\u00e9dition 32 bits) versions ant\u00e9rieures \u00e0 16.0.5535.1000","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office 2016 (\u00e9dition 64 bits) versions ant\u00e9rieures \u00e0 16.0.5535.1000","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft Office LTSC 2024 pour \u00e9ditions 32 bits","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}},{"description":"Microsoft 365 Apps pour Enterprise pour syst\u00e8mes 32 bits","product":{"name":"Office","vendor":{"name":"Microsoft","scada":false}}}],"affected_systems_content":"","content":"## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l'\u00e9diteur pour l'obtention des correctifs (cf. section Documentation).","cves":[{"name":"CVE-2026-20957","url":"https://www.cve.org/CVERecord?id=CVE-2026-20957"},{"name":"CVE-2026-20943","url":"https://www.cve.org/CVERecord?id=CVE-2026-20943"},{"name":"CVE-2026-20948","url":"https://www.cve.org/CVERecord?id=CVE-2026-20948"},{"name":"CVE-2026-20956","url":"https://www.cve.org/CVERecord?id=CVE-2026-20956"},{"name":"CVE-2026-20955","url":"https://www.cve.org/CVERecord?id=CVE-2026-20955"},{"name":"CVE-2026-20952","url":"https://www.cve.org/CVERecord?id=CVE-2026-20952"},{"name":"CVE-2026-20950","url":"https://www.cve.org/CVERecord?id=CVE-2026-20950"},{"name":"CVE-2026-20949","url":"https://www.cve.org/CVERecord?id=CVE-2026-20949"},{"name":"CVE-2026-20946","url":"https://www.cve.org/CVERecord?id=CVE-2026-20946"},{"name":"CVE-2026-20953","url":"https://www.cve.org/CVERecord?id=CVE-2026-20953"},{"name":"CVE-2026-20944","url":"https://www.cve.org/CVERecord?id=CVE-2026-20944"}],"links":[],"reference":"CERTFR-2026-AVI-0043","revisions":[{"description":"Version initiale","revision_date":"2026-01-14T00:00:00.000000"}],"risks":[{"description":"Ex\u00e9cution de code arbitraire \u00e0 distance"},{"description":"Contournement de la politique de s\u00e9curit\u00e9"}],"summary":"De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Microsoft Office. Elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance et un contournement de la politique de s\u00e9curit\u00e9.","title":"Multiples vuln\u00e9rabilit\u00e9s dans Microsoft Office","vendor_advisories":[{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20953","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20953"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20949","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20949"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20956","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20956"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20946","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20946"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20955","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20955"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20950","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20950"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20957","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20957"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20944","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20944"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20952","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20952"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20943","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20943"},{"published_at":"2026-01-13","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Office CVE-2026-20948","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20948"}]}