CVE-2018-6871Libreoffice Information Disclosure
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.
Published Feb 9, 2018 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2018-6871, DSA-4111-1, DSA-4111-2, SUSE-SU-2018:0428-1, SUSE-SU-2018:0443-1, UBUNTU-CVE-2018-6871, USN-3579-1
Key Facts
Patch immediately- CVE-2018-6871 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Libreoffice, Ubuntu Linux (Canonical), Debian Linux and 22 more products.
- It is not listed in any known-exploited vulnerabilities catalog. A public exploit is reported by tracking sources, but no code link is listed yet.
- EPSS estimates a 23% probability of exploitation in the next 30 days.
- Fixed versions are available, including autocorr-af 1:4.3.7.2-2.0.1.el6_9.2, autocorr-af 1:5.0.6.2-15.0.1.el7_4, autocorr-bg 1:4.3.7.2-2.0.1.el6_9.2.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
23%
Higher than 97.7% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
51/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
3
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2018-6871
- advisoryhttps://ubuntu.com/security/CVE-2018-6871
- advisoryhttps://www.cve.org/CVERecord?id=CVE-2018-6871
- advisoryRHSA-2018:0418
- advisoryRHSA-2018:0517
- advisoryhttps://blog.documentfoundation.org/blog/2018/02/09/early-availability-libreoffice-5-4-5-libreoffice-6-0-1/
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.
Affected Products
978 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| LibreofficeLibreoffice | 6.0.0, 6.0.0-alpha1, 6.0.0-beta1, 6.0.0-beta2 | 5.4.5 |
| Ubuntu LinuxCanonical | 14.04, 16.04, 17.10 | n/a |
| Debian LinuxDebian | 9.0 | n/a |
| Enterprise Linux DesktopRedhat | 6.0, 7.0 | n/a |
| Enterprise Linux ServerRedhat | 6.0, 7.0 | n/a |
Patched Releases
autocorr-af
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-bg
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-ca
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-cs
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-da
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-de
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-en
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-es
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-fa
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-fi
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-fr
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-ga
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-hr
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-hu
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-is
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-it
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-ja
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-ko
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-lb
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-lt
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-mn
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-nl
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-pl
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-pt
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
autocorr-ro
1:4.3.7.2-2.0.1.el6_9.2, 1:5.0.6.2-15.0.1.el7_4
Timeline
Publicly disclosed
Feb 9, 2018
Last updated
Aug 4, 2026
Weakness Type
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
- advisorysecurity-tracker.debian.org · CVE-2018-6871
- advisoryubuntu.com · CVE-2018-6871
- advisorycve.org · CVERecord
- advisoryRHSA-2018:0418
- advisoryRHSA-2018:0517
FAQ
Common Questions.
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.
Affected: Libreoffice versions 6.0.0, 6.0.0-alpha1, 6.0.0-beta1, 6.0.0-beta2; Ubuntu Linux (Canonical) versions 14.04, 16.04, 17.10; Debian Linux versions 9.0, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
A public exploit is reported by tracking sources, but no code link is listed yet.
Fixed versions are available, including autocorr-af 1:4.3.7.2-2.0.1.el6_9.2, autocorr-af 1:5.0.6.2-15.0.1.el7_4, autocorr-bg 1:4.3.7.2-2.0.1.el6_9.2.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2018-6871 On Your Attack Surface?
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