CVE-2018-6871

CRITICAL

LibreOffice <5.4.5 & 6.x <6.0.1 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2018-6871. PoCs published by Mikhail Klementev.

AI-analyzed exploit summary This exploit leverages a vulnerability in LibreOffice's WEBSERVICE function to read local files and exfiltrate their contents via HTTP requests. The PoC demonstrates file disclosure by embedding malicious formulas in a spreadsheet document.

Description

LibreOffice before 5.4.5 and 6.x before 6.0.1 allows remote attackers to read arbitrary files via =WEBSERVICE calls in a document, which use the COM.MICROSOFT.WEBSERVICE function.

Exploits (1)

exploitdb WORKING POC
by Mikhail Klementev · remotelinux
https://www.exploit-db.com/exploits/44022

This exploit leverages a vulnerability in LibreOffice's WEBSERVICE function to read local files and exfiltrate their contents via HTTP requests. The PoC demonstrates file disclosure by embedding malicious formulas in a spreadsheet document.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: LibreOffice prior to 5.4.5/6.0.1
No auth needed
Prerequisites: Victim must open the malicious document · Attacker must have a listener to receive exfiltrated data
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (8)

Core 8
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/44022/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3579-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0517
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:0418
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4111

Scores

CVSS v3 9.8
EPSS 0.2399
EPSS Percentile 97.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (19)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 17.10
debian/debian_linux 9.0
libreoffice/libreoffice 6.0.0 (4 CPE variants)
libreoffice/libreoffice < 5.4.5
redhat/enterprise_linux_desktop 6.0
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_server 6.0
redhat/enterprise_linux_server 7.0
... and 9 more
Published Feb 09, 2018
Tracked Since Feb 18, 2026