CVE-2026-26134
published 2026-03-10CVE-2026-26134: Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
PriorityP346high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.35%
27.9th percentile
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | 365_copilot | < 16.0.19822.20000 | 16.0.19822.20000 |
| microsoft | microsoft_office_for_android | >= 16.0.1 < 16.0.19822.20000 | 16.0.19822.20000 |
| msrc | microsoft_office_for_android | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.8HIGH
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GHSA
GHSA-46v7-2rrf-mc24: Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally
ghsa_unreviewed·2026-03-10
CVE-2026-26134 [HIGH] CWE-190 GHSA-46v7-2rrf-mc24: Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally
Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
Microsoft
Microsoft Office Elevation of Privilege Vulnerability
vendor_msrc·2026-03-10·CVSS 7.8
CVE-2026-26134 [HIGH] CWE-190 Microsoft Office Elevation of Privilege Vulnerability
Microsoft Office Elevation of Privilege Vulnerability
Description: Integer overflow or wraparound in Microsoft Office allows an authorized attacker to elevate privileges locally.
FAQ: What privileges could be gained by an attacker who successfully exploited the vulnerability?
An attacker who successfully exploited this vulnerability could gain administrator privileges.
FAQ: Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
Microsoft Office: Microsoft Office
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
Remediation: Release Notes
Reference: https://play.google.com/store/apps/details?id=com.m
No detection rules found.
No public exploits indexed.
Sophos
March Patch Tuesday visits 15 product families
blogs_sophos·2026-03-13
March Patch Tuesday visits 15 product families
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Bleepingcomputer
Microsoft March 2026 Patch Tuesday fixes 2 zero-days, 79 flaws
blogs_bleepingcomputer·2026-03-10·CVSS 8.8
[HIGH] Microsoft March 2026 Patch Tuesday fixes 2 zero-days, 79 flaws
## Microsoft March 2026 Patch Tuesday fixes 2 zero-days, 79 flaws
## Lawrence Abrams
The number of bugs in each vulnerability category is listed below:
46 Elevation of Privilege Vulnerabilities
2 Security Feature Bypass Vulnerabilities
18 Remote Code Execution Vulnerabilities
10 Information Disclosure Vulnerabilities
4 Denial of Service Vulnerabilities
4 Spoofing Vulnerabilities
When BleepingComputer reports on Patch Tuesday security updates, we only count those released by Microsoft today. Therefore, the number of flaws does not include 9 Microsoft Edge flaws, Mariner, Payment Orchestrator Service, Azure, and Microsoft Devices Pricing Program flaws fixed earlier this month.
To learn more about the non-security updates released today, you can review our dedicated articles on the
Sophos
March Patch Tuesday visits 15 product families
blogs_sophos
March Patch Tuesday visits 15 product families
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Microsoft on Tuesday released 84 patches affecting 15 product families – including a few you’ve possibly never encountered. Eight of the addressed issues are considered by Microsoft to be of Critical severity, though none of those affect Windows, nor are they expected to be exploited within the next 30 days. In addition, five of those Critical issues were in fact addressed by Microsoft in advance of Patch Tuesday itself, as we’ll discuss below. Twenty-two have a CVSS base score of 8.0 or higher, including one with a 9.8 base score. None are known to be under active exploit in the wild, but two are publicly disclosed so far.
At patch time, six CVEs are judged more likely to be exploited in the next 30 days by the company’s estimation. Various of this month’s issues are amenable
2026-03-10
Published