Microsoft Excel 2016
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By the Year
In 2026 there have been 56 vulnerabilities in Microsoft Excel 2016 with an average score of 7.3 out of ten. Last year, in 2025 Excel 2016 had 55 security vulnerabilities published. That is, 1 more vulnerability have already been reported in 2026 as compared to last year. Last year, the average CVE base score was greater by 0.30
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 56 | 7.35 |
| 2025 | 55 | 7.65 |
| 2024 | 1 | 7.80 |
| 2023 | 0 | 0.00 |
| 2022 | 0 | 0.00 |
| 2021 | 0 | 0.00 |
| 2020 | 6 | 7.20 |
It may take a day or so for new Excel 2016 vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Microsoft Excel 2016 Security Vulnerabilities
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55949
7.8 - High
- July 14, 2026
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Use of Uninitialized Resource
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55947
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-55898
6.1 - Medium
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds Read
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55131
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-55122
7.1 - High
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds Read
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55053
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55137
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55037
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55058
7.8 - High
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Out-of-bounds Read
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-55054
6.5 - Medium
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Out-of-bounds Read
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55044
7.8 - High
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Out-of-bounds Read
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55036
7.8 - High
- July 14, 2026
Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Buffer Over-read
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55141
7.8 - High
- July 14, 2026
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Stack Overflow
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55136
7.8 - High
- July 14, 2026
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Untrusted Pointer Dereference
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-55138
5.5 - Medium
- July 14, 2026
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Untrusted Pointer Dereference
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55041
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55039
7.8 - High
- July 14, 2026
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Integer underflow
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55029
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55048
7.8 - High
- July 14, 2026
Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Integer Overflow or Wraparound
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55031
7.8 - High
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Out-of-bounds Read
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55025
7.8 - High
- July 14, 2026
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Object Type Confusion
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-55046
5.5 - Medium
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds Read
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-50408
5.5 - Medium
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds Read
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55024
7.8 - High
- July 14, 2026
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Object Type Confusion
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-48580
5.5 - Medium
- July 14, 2026
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Untrusted Pointer Dereference
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-58618
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55948
7.8 - High
- July 14, 2026
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Dangling pointer
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-55899
7.8 - High
- July 14, 2026
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Stack Overflow
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-50678
6.6 - Medium
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Heap-based Buffer Overflow
Jul 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-54988
6.1 - Medium
- July 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds Read
Jul 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-50675
7.8 - High
- July 14, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Jun 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-45455
3.3 - Low
- June 09, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds Read
Jun 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-44822
8.2 - High
- June 09, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Out-of-bounds Read
Jun 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-44823
7.8 - High
- June 09, 2026
Numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Numeric Truncation Error
Jun 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-44820
7.8 - High
- June 09, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Out-of-bounds Read
Jun 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-44818
7 - High
- June 09, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Race Condition
Jun 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-44817
7.8 - High
- June 09, 2026
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Object Type Confusion
Jun 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-45469
7.8 - High
- June 09, 2026
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Integer underflow
May 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-40362
7.8 - High
- May 12, 2026
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
May 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-40359
7.8 - High
- May 12, 2026
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Dangling pointer
May 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-40360
7.8 - High
- May 12, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds Read
Apr 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-32199
7.8 - High
- April 14, 2026
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Dangling pointer
Apr 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-32198
7.8 - High
- April 14, 2026
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Dangling pointer
Apr 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-32197
7.8 - High
- April 14, 2026
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Dangling pointer
Apr 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-32189
7.8 - High
- April 14, 2026
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Dangling pointer
Apr 2026: Microsoft Excel Information Disclosure Vulnerability
CVE-2026-32188
7.1 - High
- April 14, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Out-of-bounds Read
Mar 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-26108
7.8 - High
- March 10, 2026
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Heap-based Buffer Overflow
Mar 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-26109
8.4 - High
- March 10, 2026
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Out-of-bounds Read
Mar 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-26107
7.8 - High
- March 10, 2026
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Dangling pointer
Mar 2026: Microsoft Excel Remote Code Execution Vulnerability
CVE-2026-26112
7.8 - High
- March 10, 2026
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Untrusted Pointer Dereference
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