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PatchSiren cyber security CVE debrief

CVE-2026-80082 Microsoft CVE debrief

Microsoft Office vulnerability CVE-2026-80082 allows unauthorized information disclosure over a network due to an out-of-bounds read issue. Defenders should assess exposure, prioritize remediation, and verify inventory for affected versions. This medium-severity vulnerability requires verification of affected versions and inventory, and medium priority for remediation due to potential risk. The CVE record and NVD entry provide details on the vulnerability, but specific version information and exploitation details are not provided, requiring verification from official sources.

Vendor
Microsoft
Product
Microsoft 365 Apps for Enterprise
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-17
Advisory published
2026-09-08
Advisory updated
2026-09-17

Who should care

Defenders responsible for Microsoft Office deployments should assess exposure and prioritize remediation for CVE-2026-80082. This includes verifying inventory for vulnerable Microsoft Office versions and reviewing compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2026-80082 is a medium-severity vulnerability in Microsoft Office that allows information disclosure over a network. Defenders should assess exposure, prioritize remediation, and verify inventory for affected versions.

  • Potential information disclosure over the network
  • Requires verification of affected versions and inventory
  • Medium priority for remediation due to potential risk

Technical summary

CVE-2026-80082 is an out-of-bounds read vulnerability in Microsoft Office that allows an unauthorized attacker to disclose information over a network. The vulnerability has a CVSS score of 6.5 and is classified as MEDIUM severity. It requires defenders to assess exposure, prioritize remediation, and verify inventory for affected versions. The CVE record and NVD entry provide details on the vulnerability.

Defensive priority

Medium priority for defenders to assess and remediate CVE-2026-80082 due to potential information disclosure risk.

Recommended defensive actions

  • Assess exposure of Microsoft Office installations to CVE-2026-80082
  • Prioritize remediation for affected versions
  • Verify inventory for vulnerable Microsoft Office versions

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, specific version information and exploitation details are not provided, requiring verification from official sources.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-80082 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-80082

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-80082 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-80082

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.