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CVE-2026-69797 Microsoft CVE debrief

CVE-2026-69797 is a high-severity use-after-free vulnerability in Microsoft Office PowerPoint that allows an unauthorized attacker to execute code over a network. The vulnerability has a CVSS score of 8.8. Microsoft has released a patch for this vulnerability. Defenders should prioritize updating affected systems to prevent potential code execution and review the supplied official advisory to validate affected scope, severity, and vendor guidance. Affected systems require immediate patching and defenders should monitor systems for potential exploitation attempts.

Vendor
Microsoft
Product
Microsoft 365 Apps for Enterprise
CVSS
HIGH 8.8
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 PowerPoint systems should prioritize updating affected systems to prevent potential code execution.

Why it matters

CVE-2026-69797 is a high-severity vulnerability in Microsoft Office PowerPoint that allows an unauthorized attacker to execute code over a network. Defenders should prioritize updating affected systems to prevent potential code execution.

  • Potential code execution over a network
  • High-severity vulnerability with a CVSS score of 8.8
  • Affected systems require immediate patching

Technical summary

CVE-2026-69797 is a use-after-free vulnerability in Microsoft Office PowerPoint that allows an unauthorized attacker to execute code over a network. The vulnerability has a CVSS score of 8.8 and is classified as a high-severity issue. The vulnerability affects Microsoft Office PowerPoint systems. Defenders should prioritize updating affected systems to prevent potential code execution and review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Defensive priority

Defenders should prioritize updating affected Microsoft Office PowerPoint systems to prevent potential code execution.

Recommended defensive actions

  • Update affected Microsoft Office PowerPoint systems
  • Review and apply Microsoft's patch for CVE-2026-69797
  • Monitor systems for potential exploitation attempts

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, including its CVSS score and affected systems. The CVE record was published on 2026-09-08T18:19:51.320Z. Defenders should confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. The official CVE Program record and NVD detail page offer source-provided CVE metadata and source-specific vulnerability assessment. Review compensating controls for

Sources and references

Verified primary and authoritative sources

  • CVE-2026-69797 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-69797

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

  • CVE-2026-69797 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-69797

    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.