CVE-2026-41034

CVSS 5 MEDIUMEPSS 0.3%CWE-125

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

16 Apr 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Affected products

Ascensio · ONLYOFFICE DocumentServer

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References

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