PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-72976 Microsoft CVE debrief

An out-of-bounds read vulnerability exists in Microsoft Office Word, allowing an authorized attacker to disclose information locally. The vulnerability has a CVSS score of 5 and a severity of MEDIUM. Microsoft has released a patch for this vulnerability. Affected product deployments should be identified in managed environments and assigned an owner for follow-up. The official advisory or CVE record should be reviewed to validate affected scope, severity, and vendor guidance. For exposed systems, compensating controls should be reviewed while remediation is scheduled and verified. Monitoring, detection, and logs for exposed assets should be checked for extra review. The CVE record,

Vendor
Microsoft
Product
Microsoft 365 Apps for Enterprise
CVSS
MEDIUM 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 Word configurations and security should assess exposure and apply patches to prevent local information disclosure.

Why it matters

An out-of-bounds read vulnerability exists in Microsoft Office Word, allowing an authorized attacker to disclose information locally. Defenders should assess exposure and apply patches to prevent local information disclosure.

  • Verify and apply patches for Microsoft Office Word to prevent local information disclosure
  • Review and update Microsoft Office Word configurations to ensure secure settings
  • Monitor Microsoft Office Word for suspicious activity

Technical summary

The vulnerability exists in Microsoft Office Word and allows an authorized attacker to disclose information locally. The vulnerability has a CVSS score of 5 and a severity of MEDIUM. Affected product context requires defenders to assess exposure and apply patches to prevent local information disclosure. The official CVE Program record and NVD vulnerability detail page provide information on the vulnerability, including its CVSS score and severity. Microsoft has released a patch for this vulnerability, which should be applied to prevent local information disclosure

Defensive priority

Apply patches for Microsoft Office Word to prevent local information disclosure

Recommended defensive actions

  • Apply patches for Microsoft Office Word to prevent local information disclosure
  • Review and update Microsoft Office Word configurations to ensure secure settings
  • Monitor Microsoft Office Word for suspicious activity

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, including its CVSS score and severity. Microsoft has released a patch for this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-72976 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-72976

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

  • CVE-2026-72976 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-72976

    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.