CVE-2026-69734
mediumInteger overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Vendor / product: Microsoft — 365 apps
Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (secure@microsoft.com)
Timeline (UTC)
Published: 2026-09-08 18:19
Modified: 2026-09-17 20:17
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 06:51 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
microsoft / 365_apps all versions
microsoft / microsoft_365 all versions
microsoft / office_2016 all versions
microsoft / office_2019 all versions
microsoft / office_2021 all versions
microsoft / office_2024 all versions
microsoft / word 2016
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69734
Patch / mitigation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69734
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69734 secure@microsoft.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:51 UTC · record ↗