CVE-2026-108426
HIGHCVSS 8.8/10EPSS 0.44%
Last modified
CVE-2026-108426 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.
Description
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | >= 16.0.1, < https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office LTSC 2021 | >= 16.0.1, < 16.0.14334.20974 |
| Microsoft | Microsoft Office LTSC 2024 | >= 16.0.0, < 16.0.17932.21056 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-108426?
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
How severe is CVE-2026-108426?
CVE-2026-108426 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.
How do I fix CVE-2026-108426?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-108399Heap-based buffer overflow in Windows Hyper-V allows an auth…7.2
- CVE-2026-1084The Cookie consent for developers plugin for WordPress is vu…4.4
- CVE-2026-10840A flaw was found in the OpenShift Pipelines operator. The te…7.1
- CVE-2026-108400Integer overflow or wraparound in Microsoft Windows Codecs L…8.8
- CVE-2026-10841IBM WebSphere Application Server 8.5, 9.0, and Liberty are v…4.8
- CVE-2026-10842IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSph…7.5
- CVE-2026-108427Heap-based buffer overflow in Microsoft Office Word allows a…8.8
- CVE-2026-108428Heap-based buffer overflow in Microsoft Office Word allows a…8.8
- CVE-2026-108429Heap-based buffer overflow in Microsoft Office Word allows a…8.8
- CVE-2026-10843A flaw was found in the OpenShift Cloud Credential Operator …7.2
- CVE-2026-108430Heap-based buffer overflow in Microsoft Office Word allows a…8.8
- CVE-2026-108431Stack-based buffer overflow in Microsoft Office Word allows …8.8
Are you affected by CVE-2026-108426?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST