CVE-2026-119998: Microsoft Office Security Feature Bypass Vulnerability
CVE-2026-119998 is a security feature bypass vulnerability in Microsoft Office, rated Important by Microsoft, with a CVSS 3.1 base score of 6.5 (Medium). An attacker can exploit it remotely over the network, without any privileges and only if a user takes an action. Microsoft has not reported exploitation in the wild and rates exploitation as less likely. Microsoft released the fix on 10 November 2026 in the November 2026 Patch Tuesday. It affects 6 products in 1 product family (Microsoft Office).
Key facts
- CVE ID
- CVE-2026-119998
- Severity
- Medium CVSS 6.5
- Microsoft severity
- Important
- Impact
- Security Feature Bypass
- Exploited in the wild
- No
- Publicly disclosed
- No
- Exploitation likelihood
- Less Likely
- Weakness
- CWE-356
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- November 2026 Patch Tuesday
- Product families
- Microsoft Office
CVSS score and vector
Microsoft scores CVE-2026-119998 at 6.5 (temporal 5.7) using CVSS 3.1. Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
| Metric | Value |
|---|---|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality impact | None |
| Integrity impact | High |
| Availability impact | None |
| Exploit code maturity | Unproven |
| Remediation level | Official fix |
| Report confidence | Confirmed |
Description
Product ui does not warn user of unsafe actions in Microsoft Office allows an unauthorized attacker to bypass a security feature over a network.
Frequently asked questions (Microsoft)
Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
What kind of security feature could be bypassed by successfully exploiting this vulnerability?
Successful exploitation of this vulnerability would allow an attacker to bypass the Office Protected View and open in editing mode rather than protected mode.
Affected products (6)
Microsoft Office
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Microsoft Office LTSC 2021 for 64-bit editions | Release Notes | Security Update | 16.0.14334.21048 | |
| Microsoft Office LTSC 2021 for 32-bit editions | Release Notes | Security Update | 16.0.14334.21048 | |
| Microsoft Office LTSC 2024 for 64-bit editions | Release Notes | Security Update | 16.0.17932.21140 | |
| Microsoft Office LTSC 2024 for 32-bit editions | Release Notes | Security Update | 16.0.17932.21140 | |
| Microsoft 365 Apps for Enterprise for 64-bit Systems | Release Notes | Security Update | https://aka.ms/OfficeSecurityReleases | |
| Microsoft 365 Apps for Enterprise for 32-bit Systems | Release Notes | Security Update | https://aka.ms/OfficeSecurityReleases |
NIST NVD data
- NVD status
- Awaiting Analysis
- NVD CVSS
- 6.5 (MEDIUM)
- NVD weakness
- CWE-356
- Published to NVD
- NVD last modified
References
Acknowledgments
- namnp with Viettel Cyber Security
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. |