CVE-2021-25631
denylist of executable filename extensions possible to bypass under windows
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 can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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 can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.
- Record
CVE-2021-25631- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-184
- Updated
- 2026-11-02
CVE List No score
denylist of executable filename extensions possible to bypass under windows
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 can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.
- Record
CVE-2021-25631- Weakness
- CWE-184
- Updated
- 2026-11-02
EUVDEUVD-2021-12527 No score
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 can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.
- Record
EUVD-2021-12527- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8xj5-7228-hcfg No score
In the LibreOffice 7-1 series in versions prior to 7.1.2, and in the 7-0 series in versions prior...
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 can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.
- Record
GHSA-8xj5-7228-hcfg- Updated
- 2026-11-02
OSVALPINE-CVE-2021-25631
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 can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.
- Record
ALPINE-CVE-2021-25631- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libreofficeAlpine:v3.15 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.16 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.17 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.18 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.19 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.20 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.21 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.22 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.23 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
libreofficeAlpine:v3.24 |
7.0.0 up to 7.2.2.2-r0 | 7.2.2.2-r0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, facts, references | OSV | |
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-25631 is a high vulnerability (CVSS 8.8) in Libreoffice, published May 3, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.04%, the 92nd percentile. Fixed in libreoffice 7.2.2.2-r0.