CVE-2026-55033
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
An integer overflow or wraparound vulnerability has been discovered in Microsoft Office Word. This flaw allows an unauthorized attacker to execute code locally.
Risk Assessment
The risk involves potential system compromise where an attacker can execute malicious code in the user's context, leading to breach of confidentiality, integrity, and availability of data.
Recommendation
It is recommended to immediately apply the security update provided by Microsoft for Microsoft Office Word. Additionally, restrict user privileges and follow the principle of least privilege.
Other vulnerabilities in Microsoft Office Word
See all- CVE-2026-41101High
Improper access control in Microsoft Office Word allows an authorized attacker to perform spoofing locally.
- CVE-2026-40364High
In Microsoft Office Word, a vulnerability related to access of resource using incompatible type ('type confusion') allows an unauthorized attacker to execute code locally.
- CVE-2026-20948High
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
- CVE-2026-20944High
An out-of-bounds read vulnerability in Microsoft Office Word allows an unauthorized attacker to execute code locally.
- CVE-2026-70105Medium
Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
- CVE-2026-70319Medium
Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
- CVE-2026-70311High
A use-after-free vulnerability in Microsoft Office Word allows an unauthorized attacker to execute code locally.
- CVE-2026-70310Medium
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
- CVE-2026-66810Medium
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
- CVE-2026-66806Medium
Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Original NVD description (English source)
Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code locally.