CVE-2021-25832
CRITICAL
9.8
CVSS Score
Published: March 1, 2021 at 03:08 PM UTC
Updated: June 17, 2026 at 03:42 AM UTC
1 product affected across 1 vendorDocument Server
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Severity
CRITICAL9.8
Exploit prediction
EPSS 13%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
4.0.0-9 ≤ v ≤ 6.0.0
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/ONLYOFFICE/core
- 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/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/ximabmp.cpp#L354
- https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/ximabmp.cpp#L358
References (7)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L424x_refsource_MISCVendor Advisory
Source: [email protected]
https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cpp#L428x_refsource_MISCVendor Advisory
Source: [email protected]
https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/ximabmp.cpp#L354x_refsource_MISCVendor Advisory
Source: [email protected]
https://github.com/ONLYOFFICE/core/blob/v6.0.1.15/DesktopEditor/cximage/CxImage/ximabmp.cpp#L358x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25832CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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