CVE-2026-83949

Microsoft Office Word Information Disclosure Vulnerability

At a glance

Severity
MEDIUM 5.5
EPSS
EPSS 0.54 % · percentile 45 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
microsoft
NVD status
Analyzed

Description

Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:Cmicrosoft
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NNVD · secure@microsoft.com (Secondary)

Weaknesses (CWE)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Microsoft · Microsoft 365 Apps for Enterpriseaffected 16.0.1 < 16.0.20326.20138
Microsoft · Microsoft Office 2019affected 19.0.0 < 16.0.10417.20207
Microsoft · Microsoft Office LTSC 2021affected 16.0.1 < 16.0.14334.20906
Microsoft · Microsoft Office LTSC 2024affected 16.0.0 < 16.0.17932.20976
Microsoft · Microsoft Word 2016affected 16.0.1 < 16.0.5569.1000

References

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