ONLYOFFICE DocumentServer before 9.3.0 has an untrusted pointer dereference in XLS processing/conversion (via pictFmla.cbBufInCtlStm and other vectors), leading to an information leak and ASLR bypass.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Ascensio ONLYOFFICE DocumentServer unaffected
Version Status Constraints
0 affected < 9.3.0

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md cve-icon cve-icon
History

Thu, 16 Apr 2026 06:30:00 +0000

Type Values Removed Values Added
Description ONLYOFFICE DocumentServer before 9.3.0 has an untrusted pointer dereference in XLS processing/conversion (via pictFmla.cbBufInCtlStm and other vectors), leading to an information leak and ASLR bypass.
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-16T06:13:45.134Z

Reserved: 2026-04-16T06:06:44.178Z

Link: CVE-2026-41034

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-16T07:16:30.843

Modified: 2026-04-16T07:16:30.843

Link: CVE-2026-41034

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses