Skip to content

Known vulnerabilities in Microsoft Office LTSC 2021

Is your version affected?

CVE Summary Score Published
CVE-2026-68811 Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized… 7.8 High Aug 11, 2026
CVE-2026-68813 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally 5.5 Medium Aug 11, 2026
CVE-2026-68809 Incomplete cleanup in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally 5.5 Medium Aug 11, 2026
CVE-2026-68810 Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-68806 Out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-68808 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally 5.5 Medium Aug 11, 2026
CVE-2026-68802 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally 5.5 Medium Aug 11, 2026
CVE-2026-68807 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-68800 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-68795 Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-68796 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-68793 Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-68794 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-68792 Improper neutralization of special elements used in a command ('command injection') in Microsoft Office allows an… 7.8 High Aug 11, 2026
CVE-2026-65807 Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized… 8.8 High Aug 11, 2026
CVE-2026-65664 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-65661 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-65656 Improper neutralization of special elements used in a command ('command injection') in Microsoft Office allows an… 7.8 High Aug 11, 2026
CVE-2026-65657 Use after free in Microsoft Office allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-63519 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-63521 Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally 5.5 Medium Aug 11, 2026
CVE-2026-63517 Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally 5.5 Medium Aug 11, 2026
CVE-2026-63518 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-63515 Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026
CVE-2026-63513 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally 7.8 High Aug 11, 2026

Other Microsoft products