CVE-2026-97740

Microsoft Office Excel Information Disclosure Vulnerability

At a glance

Severity: MEDIUM 6.5
EPSS: EPSS 0.86 % · percentile 58 (2026-10-27)
State: PUBLISHED
Published: 2026-10-13
Updated: 2026-10-28
Assigner: microsoft
NVD status: Analyzed

Description

Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C	microsoft
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	NVD · secure@microsoft.com (Secondary)

Weaknesses (CWE)

CWE-497

European references

ENISA EUVD · EUVD-2026-99812
GCVE · GCVE-0-2026-97740

CERT-FR advisories

CERTFR-2026-AVI-1312 — Multiples vulnérabilités dans Microsoft Office · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
cpe:2.3:a:microsoft:microsoft_365:-:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x64:*
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:-:x86:*
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:macos:-:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x64:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:-:x86:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:macos:-:*
cpe:2.3:a:microsoft:office_online_server:*:*:*:*:*:*:*:* < 16.0.10417.20228

Affected products

Product	Versions
Microsoft · Microsoft 365 Apps for Enterprise	affected 16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Office 365 for Mac	affected 1.0.0 < 16.114.26101123
Microsoft · Microsoft Office LTSC 2021	affected 16.0.1 < 16.0.14334.20974
Microsoft · Microsoft Office LTSC 2024	affected 16.0.0 < 16.0.17932.21056
Microsoft · Microsoft Office LTSC for Mac 2021	affected 16.0.1 < 16.114.26101123
Microsoft · Microsoft Office LTSC for Mac 2024	affected 16.0.0 < 16.114.26101123
Microsoft · Office Online Server	affected 16.0.0.0 < 16.0.10417.20228

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97740

Sources

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