Skip to main content

Libreoffice CVE-2021-25635

MEDIUM
Improper Certificate Validation (CWE-295)
2025-03-21 security@documentfoundation.org
5.2
CVSS 4.0 · NVD
Share

Severity by source

NVD PRIMARY
5.2 MEDIUM
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
SUSE
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Red Hat
6.3 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

3
Patch released
Apr 01, 2026 - 08:30 nvd
Patch available
Analysis Generated
Mar 28, 2026 - 18:32 vuln.today
CVE Published
Mar 21, 2025 - 15:15 nvd
MEDIUM 5.2

DescriptionCVE.org

An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to self sign an ODF document, with a signature untrusted by the target, then modify it to change the signature algorithm to an invalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a valid signature issued by a trusted person

This issue affects LibreOffice: from 7.0 before 7.0.5, from 7.1 before 7.1.1.

AnalysisAI

An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to self sign an ODF document, with a signature untrusted by the target, then modify it to change the signature. Rated medium severity (CVSS 5.2), this vulnerability is no authentication required.

Technical ContextAI

This vulnerability is classified under CWE-295. An Improper Certificate Validation vulnerability in LibreOffice allowed an attacker to self sign an ODF document, with a signature untrusted by the target, then modify it to change the signature algorithm to an invalid (or unknown to LibreOffice) algorithm and LibreOffice would incorrectly present such a signature with an unknown algorithm as a valid signature issued by a trusted person0 before 7.0.5, from 7.1 before 7.1.1. Affected products include: Libreoffice. Version information: before 7.0.5.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2019-9851 CRITICAL POC
9.8 Aug 15

LibreOffice is typically bundled with LibreLogo, a programmable turtle vector graphics script, which can execute arbitra

CVE-2015-5212 MEDIUM
6.8 Nov 10

Integer underflow in LibreOffice before 4.4.5 and Apache OpenOffice before 4.1.2, when the configuration setting "Load p

CVE-2015-5214 MEDIUM
6.8 Nov 10

LibreOffice before 4.4.6 and 5.x before 5.0.1 and Apache OpenOffice before 4.1.2 allows remote attackers to cause a deni

CVE-2018-6871 CRITICAL POC
9.8 Feb 09

LibreOffice before 5.4.5 and 6.x before 6.0.1 allows remote attackers to read arbitrary files via =WEBSERVICE calls in a

CVE-2021-25631 HIGH POC
8.8 May 03

In the LibreOffice 7-1 series in versions prior to 7.1.2, and in the 7-0 series in versions prior to 7.0.5, the denylist

CVE-2012-2334 MEDIUM POC
6.8 Jun 19

Integer overflow in filter/source/msfilter/msdffimp.cxx in OpenOffice.org (OOo) 3.3, 3.4 Beta, and possibly earlier, and

CVE-2018-10583 HIGH POC
7.5 May 01

An information disclosure vulnerability occurs when LibreOffice 6.0.3 and Apache OpenOffice Writer 4.1.5 automatically p

CVE-2014-3524 CRITICAL
9.3 Aug 26

Apache OpenOffice before 4.1.1 allows remote attackers to execute arbitrary commands and possibly have other unspecified

CVE-2015-5213 MEDIUM
6.8 Nov 10

Integer overflow in LibreOffice before 4.4.5 and Apache OpenOffice before 4.1.2 allows remote attackers to cause a denia

CVE-2014-0247 CRITICAL
10.0 Jul 03

LibreOffice 4.2.4 executes unspecified VBA macros automatically, which has unspecified impact and attack vectors, possib

CVE-2012-0037 MEDIUM POC
6.5 Jun 17

Redland Raptor (aka libraptor) before 2.0.7, as used by OpenOffice 3.3 and 3.4 Beta, LibreOffice before 3.4.6 and 3.5.x

CVE-2017-7856 CRITICAL
9.8 Apr 14

LibreOffice before 2017-03-11 has an out-of-bounds write caused by a heap-based buffer overflow in the SVMConverter::Imp

Vendor StatusVendor

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise Server 12 SP5 Fixed
SUSE Linux Enterprise Server 15 SP3 Fixed
SUSE Linux Enterprise Server for SAP Applications 12 SP5 Fixed
SUSE Linux Enterprise Desktop 12 SP3 Fixed
SUSE Linux Enterprise Desktop 12 SP4 Fixed

Share

CVE-2021-25635 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy