CVE-2026-41034

State: Published
Severity: 5.0 Medium
Published: Apr 16, 2026
Updated: Apr 16, 2026
Reserved: Apr 16, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	5.0 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N	mitre

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
ONLYOFFICE DocumentServerAscensio	before 9.3.0Affected

References

https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md

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