High severity · published Mar 10, 2026
CVE-2026-26134
Microsoft Office Elevation of Privilege Vulnerability
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Microsoft Office for Android · Microsoft
16.0.1 before 16.0.19822.20000 · source: vendor
3C
365 Copilot · Microsoft
before 16.0.19822.20000 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26134
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-26134
Vendor Advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26134
More from Microsoft Office for Android
7.8
CVE-2023-21823
Windows Graphics Component Remote Code Execution Vulnerability
8.8
CVE-2026-78439
Microsoft Office Graphics Component Remote Code Execution Vulnerability
8.4
CVE-2026-45463
Microsoft Office Remote Code Execution Vulnerability
8.4
CVE-2026-45461
Microsoft Office Remote Code Execution Vulnerability
8.4
CVE-2026-45474
Microsoft Office Remote Code Execution Vulnerability