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Δ / VULNERABILITY RECORD

CVE-2026-65664.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7.8No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Aug 11, 2026

Disclosure summary

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Source-reported weakness categories

CWE-122

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Aug

Open original source · Updated Aug 11, 2026

Microsoft Office Graphics Component Remote Code Execution Vulnerability

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 7.8

VendorProduct / associationVersion / bounds
Microsoft update guideMicrosoft Office 2019 for 32-bit editions (MSRC status code 3)
Microsoft update guideMicrosoft Office 2019 for 64-bit editions (MSRC status code 3)
Microsoft update guideMicrosoft 365 Apps for Enterprise for 32-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft 365 Apps for Enterprise for 64-bit Systems (MSRC status code 3)
Microsoft update guideMicrosoft Office LTSC for Mac 2021 (MSRC status code 3)
Microsoft update guideMicrosoft Office LTSC 2021 for 64-bit editions (MSRC status code 3)
Microsoft update guideMicrosoft Office LTSC 2021 for 32-bit editions (MSRC status code 3)
Microsoft update guideMicrosoft Office LTSC 2024 for 32-bit editions (MSRC status code 3)
Microsoft update guideMicrosoft Office LTSC 2024 for 64-bit editions (MSRC status code 3)
Microsoft update guideMicrosoft Office LTSC for Mac 2024 (MSRC status code 3)
Microsoft update guideMicrosoft Office 365 for Mac (MSRC status code 3)

Vendor remediation references

  • Click to Run · build https://aka.ms/OfficeSecurityReleases · product IDs 11573, 11574, 11762, 11763, 11952, 11953, 12420, 12421
  • Vendor guidance · product IDs 11573, 11574, 11762, 11763, 11952, 11953, 12420, 12421
  • Release Notes · build 16.112.26081010 · product IDs 11951, 12440
  • Vendor guidance · product IDs 11951, 12440
  • Release Notes · build 16.112.26081010 · product IDs 21368
  • Vendor guidance · product IDs 21368

Original records & references

PUBLISHED 2026-08-11T03:00:00-04:00
MODIFIED 2026-08-11T03:00:00-04:00
INGESTED 2026-10-08T12:40:36-04:00