CVE-2019-9853
7.8 · HIGHOverview
CVE-2019-9853 is a high-severity vulnerability affecting libreoffice libreoffice. It was published on September 27, 2019 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
LibreOffice documents can contain macros. The execution of those macros is controlled by the document security settings, typically execution of macros are blocked by default. A URL decoding flaw existed in how the urls to the macros within the document were processed and categorized, resulting in the possibility to construct a document where macro execution bypassed the security settings. The documents were correctly detected as containing macros, and prompted the user to their existence within the documents, but macros within the document were subsequently not controlled by the security settings allowing arbitrary macro execution This issue affects: LibreOffice 6.2 series versions prior to 6.2.7; LibreOffice 6.3 series versions prior to 6.3.1.
Remediation
Check the references section for vendor advisories and patches from libreoffice. Update libreoffice to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| libreoffice | libreoffice | >= 6.2.0, < 6.2.6 | Affected |
References
Frequently Asked Questions
What is CVE-2019-9853?
CVE-2019-9853 is a high-severity vulnerability affecting libreoffice libreoffice. It was published on September 27, 2019 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2019-9853?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-9853?
Check the references section for vendor advisories and patches from libreoffice. Update libreoffice to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-9853?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-9853 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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