CVE-2026-45643
HIGHCVSS 7.8/10EPSS 0.37%
Last modified
CVE-2026-45643 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.
Description
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | 365 Apps | All versions |
| Microsoft | Microsoft 365 | All versions |
| Microsoft | Office 2021 | All versions |
| Microsoft | Office 2024 | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-45643?
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
How severe is CVE-2026-45643?
CVE-2026-45643 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.
How do I fix CVE-2026-45643?
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-2026-45638Heap-based buffer overflow in Windows Ancillary Function Dri…7.8
- CVE-2026-45639Out-of-bounds read in Windows RDP allows an unauthorized att…7.5
- CVE-2026-4564A security vulnerability has been detected in yangzongzhuan …4.7
- CVE-2026-45640Use after free in Windows Bluetooth Port Driver allows an au…7
- CVE-2026-45641Access of resource using incompatible type ('type confusion'…7.8
- CVE-2026-45642Improper input validation in Microsoft Azure Attestation ser…3.9
- CVE-2026-45644Improper neutralization of input during web page generation …8
- CVE-2026-45645Untrusted pointer dereference in Microsoft Office allows an …7.8
- CVE-2026-45646Allocation of resources without limits or throttling in ASP.…7.5
- CVE-2026-45647Time-of-check time-of-use (toctou) race condition in Microso…7
- CVE-2026-45648Stack-based buffer overflow in Active Directory Domain Servi…8.8
- CVE-2026-45649Improper access control in Office for Android allows an unau…7.1
Are you affected by CVE-2026-45643?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST