CVE-2026-55898

Microsoft Excel Information Disclosure Vulnerability

En bref

Sévérité
MEDIUM 6.1
EPSS
EPSS 0.47 % · centile 41 (2026-10-27)
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
microsoft
Statut NVD
Analyzed

Description

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 6.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H/E:U/RL:O/RC:Cmicrosoft
CVSS 3.1MEDIUM 6.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HNVD · secure@microsoft.com (Secondary)
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:HNVD · nvd@nist.gov (Primary)

Faiblesses (CWE)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Microsoft · Microsoft 365 Apps for Enterpriseaffected 16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Excel 2016affected 16.0.0.0 < 16.0.5561.1001
Microsoft · Microsoft Office 2019affected 19.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Office 365 for Macaffected 1.0.0 < 16.111.26071215
Microsoft · Microsoft Office LTSC 2021affected 16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Office LTSC 2024affected 16.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Office LTSC for Mac 2021affected 16.0.1 < 16.111.26071215
Microsoft · Microsoft Office LTSC for Mac 2024affected 16.0.0 < 16.111.26071215
Microsoft · Office Online Serveraffected 16.0.0.0 < 16.0.10417.20175

Références

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD