CVE-2026-80076 Microsoft CVE debrief

Who should care

Roles managing Microsoft Office deployments should assess exposure and prioritize verification of affected versions and remediation. This includes IT administrators, security teams, and operators responsible for maintaining Microsoft Office deployments. They should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Why it matters

CVE-2026-80076 allows unauthorized information disclosure over a network due to an out-of-bounds read issue in Microsoft Office. Defenders should assess exposure, particularly for roles managing Microsoft Office deployments, and prioritize verification of affected versions and remediation.

• Verify potential information disclosure attempts
• Assess exposure of Microsoft Office deployments
• Prioritize patching for affected deployments

Technical summary

CVE-2026-80076 is an out-of-bounds read vulnerability in Microsoft Office that allows unauthorized information disclosure over a network. This vulnerability impacts Microsoft Office users who may be exposed to information disclosure attacks. Defenders should verify if their Microsoft Office deployments are affected by CVE-2026-80076 and prioritize patching. The CVE record and NVD entry provide details on the vulnerability.

Defensive priority

Defenders should verify if their Microsoft Office deployments are affected by CVE-2026-80076 and prioritize patching.

Recommended defensive actions

• Verify if Microsoft Office deployments are affected by CVE-2026-80076
• Prioritize patching for affected deployments
• Monitor for potential information disclosure attempts

Evidence notes

The CVE record and NVD entry provide details on the vulnerability but do not specify affected or fixed versions. Defenders should verify if their Microsoft Office deployments are affected by CVE-2026-80076 and prioritize patching. The vulnerability allows unauthorized information disclosure over a network due to an out-of-bounds read issue in Microsoft Office.

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.