HOMEVULNERABILITIESCVE-2019-9850
CRITICAL

CVE-2019-9850

CWE-20Published: August 15, 2019· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute arbitrary python commands contained with the document it is launched from. LibreOffice also has a feature where documents can specify that pre-installed scripts can be executed on various document script events such as mouse-over, etc. Protection was added, to address CVE-2019-9848, to block calling LibreLogo from script event handers. However an insufficient url validation vulnerability in LibreOffice allowed malicious to bypass that protection and again trigger calling LibreLogo from script event handlers. This issue affects: Document Foundation LibreOffice versions prior to 6.2.6.

NVD Source

Technical Analysis

CVE-2019-9850 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
libreoffice1 product(s)
libreoffice
openSUSE1 product(s)
leap
Source: NVD CPE · 11 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2019/10/msg00005.html
ADVISORYhttps://seclists.org/bugtraq/2019/Aug/28
ADVISORYhttps://usn.ubuntu.com/4102-1/
ADVISORYhttps://www.debian.org/security/2019/dsa-4501
ADVISORYhttps://www.libreoffice.org/about-us/security/advisories/CVE-2019-9850
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-09/msg00006.html
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-09/msg00067.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2019/10/msg00005.html
ADVISORYhttps://seclists.org/bugtraq/2019/Aug/28
ADVISORYhttps://usn.ubuntu.com/4102-1/
ADVISORYhttps://www.debian.org/security/2019/dsa-4501
ADVISORYhttps://www.libreoffice.org/about-us/security/advisories/CVE-2019-9850

All References (18)

→
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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WVSDPZJG3UA43X3JXRHJAWXLDZEW77LM/
→
https://seclists.org/bugtraq/2019/Aug/28Mailing 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-2019-9850Vendor 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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WVSDPZJG3UA43X3JXRHJAWXLDZEW77LM/
→
https://seclists.org/bugtraq/2019/Aug/28Mailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2019-9850
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-20
CISA KEVNo
Affected5 vendor(s)
PublishedAug 15, 2019

Related CVEs (CWE-20)

CVE-2002-1358
10.0
CVE-2002-1360
10.0
CVE-2011-4755
10.0
CVE-2021-26622
10.0
CVE-2026-48281
10.0
CVE-2002-1874
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-9850 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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