CVE-2026-4430
HIGHCVSS 7.8/10EPSS 0.08%
Last modified
CVE-2026-4430 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Out-of-bounds write vulnerability in The Document Foundation LibreOffice via crafted OOXML documents with mismatched encryption salt parameters. This issue affects LibreOffice: from 26.2 before 26.2.3, from 25.8 before 25.8.7.. EPSS estimates a 0.08% chance of exploitation in the next 30 days.
Description
Out-of-bounds write vulnerability in The Document Foundation LibreOffice via crafted OOXML documents with mismatched encryption salt parameters. This issue affects LibreOffice: from 26.2 before 26.2.3, from 25.8 before 25.8.7.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libreoffice | Libreoffice | >= 25.8.0.0, < 25.8.7.0 |
| Libreoffice | Libreoffice | >= 26.2.0.0, < 26.2.3.0 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-4430?
Out-of-bounds write vulnerability in The Document Foundation LibreOffice via crafted OOXML documents with mismatched encryption salt parameters.
This issue affects LibreOffice: from 26.2 before 26.2.3, from 25.8 before 25.8.7.
How severe is CVE-2026-4430?
CVE-2026-4430 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.08% probability of exploitation in the next 30 days.
How do I fix CVE-2026-4430?
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.
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Are you affected by CVE-2026-4430?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST