Back to Database
Status published
Critical
CVE-2021-25832
A heap buffer overflow vulnerability inside of BMP image processing...
Vulnerability Description
A heap buffer overflow vulnerability inside of BMP image processing was found at [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v6.0.0. Using this vulnerability, an attacker is able to gain remote code executions on DocumentServer.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-25832
Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/ONLYOFFICE/DocumentServer
- https://github.com/ONLYOFFICE/core
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/ximabmp.cpp#L358
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/ximabmp.cpp#L354
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L424
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L428
- https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25832
More from onlyoffice
View All →CVE-2025-6380
ONLYOFFICE Docs 1.1.0 - 2.2.0 - Missing Authorization to Unauthenticated Privilege Escalation via callback Function
Critical
9.8
CVE-2024-11750
ONLYOFFICE DocSpace <= 2.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
Medium
6.4
CVE-2024-11450
ONLYOFFICE Docs <= 2.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
Medium
6.4
CVE-2022-48422
ONLYOFFICE Docs through 7.3 on certain Linux distributions allows local...
Unknown
0
CVE-2022-29777
Onlyoffice Document Server v6.0.0 and below and Core 6.1.0.26 and...
Critical
9.8
Affected Vendor
onlyoffice
View all reports →Affected Software
document server
Vulnerable Versions:
4.0.0-9
Timeline
Official Publish:
March 1st, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.