CVE-2019-9852

Name: CVE-2019-9852
Creator: NVD / NIST
Published: 2019-08-15T22:15:22.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.93%

Last modified Jun 17, 2026

CVE-2019-9852 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. EPSS estimates a 1.93% chance of exploitation in the next 30 days.

Description

LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2018-16858, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed. However this new protection could be bypassed by a URL encoding attack. In the fixed versions, the parsed url describing the script location is correctly encoded before further processing. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.93%

77.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.04
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Fedoraproject	Fedora	29
Opensuse	Leap	15.0
Opensuse	Leap	15.1
Libreoffice	Libreoffice	< 6.2.6

References

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00005.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/
https://seclists.org/bugtraq/2019/Aug/28Issue Tracking, Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Sep/17Mailing List, Third Party Advisory
https://usn.ubuntu.com/4102-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4501Third Party Advisory
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852Patch, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00005.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMEGUWMWORC3DOVEHVXLFT3A5RSCMLBH/
https://seclists.org/bugtraq/2019/Aug/28Issue Tracking, Mailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Sep/17Mailing List, Third Party Advisory
https://usn.ubuntu.com/4102-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4501Third Party Advisory
https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9852Patch, Vendor Advisory

Timeline

Published: Aug 15, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9852?

How severe is CVE-2019-9852?

CVE-2019-9852 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.93% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9852?

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.

Are you affected by CVE-2019-9852?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST