CVE-2019-9852
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.75% probability · 78th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-116, CWE-22
- Affected
- canonical/ubuntu linux · debian/debian linux · fedoraproject/fedora · opensuse/leap · libreoffice/libreoffice
- Source
- security@documentfoundation.org
EPSS 1.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.