CVE-2026-97740 Microsoft CVE debrief

Who should care

Defenders responsible for Microsoft Office products, especially those exposed to the internet, should assess their exposure and prioritize patching.

Why it matters

The vulnerability allows an unauthorized attacker to disclose information over a network, affecting various Microsoft Office products. Defenders should prioritize patching vulnerable products, especially those exposed to the internet, and verify affected products and versions.

• Potential information disclosure
• Need to verify affected products and versions
• Priority on patching vulnerable products

Technical summary

The vulnerability allows an unauthorized attacker to disclose information over a network. It affects various Microsoft Office products, including Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, and Microsoft Office LTSC 2021, 2024. Defenders should prioritize patching vulnerable products, especially those exposed to the internet, and verify affected products and versions.

Defensive priority

Defenders should prioritize patching vulnerable Microsoft Office products, especially those exposed to the internet.

Recommended defensive actions

• Patch vulnerable Microsoft Office products
• Verify affected products and versions
• Monitor for potential information disclosure

Evidence notes

The CVE record and NVD vulnerability detail provide information on the vulnerability, its severity, and affected products. The evidence is limited, and defenders should verify affected products and versions. The CVE Program record and NVD detail page offer source-provided CVE metadata and vulnerability assessment. Additional verification is required to confirm affected scope and severity.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.