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    CVE-2026-41034

    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.

    Published:Apr 16, 2026
    Last Modified:Apr 17, 2026
    EPS:Apr 16, 2026
    EPSS Score:0.00009
    CVSS Score:5

    Affected Products

    Vendor
    Onlyoffice
    Product
    Document Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2025-68936 (CVSS 6.4) — ONLYOFFICE Docs before 9.2.1 allows XSS via the Color theme name. This is related to DocumentServer.…
    CVE-2025-68935 (CVSS 6.4) — ONLYOFFICE Docs before 9.2.1 allows XSS via the Font field for the Multilevel list settings window. This is re…
    CVE-2025-68917 (CVSS 6.4) — ONLYOFFICE Docs before 9.2.1 allows XSS in the textarea of the comment editing form. This is related to Docume…
    CVE-2023-46988 (CVSS 6.7) — Path Traversal vulnerability in ONLYOFFICE Document Server before v8.0.1 allows a remote attacker to copy arbi…
    CVE-2023-50883 (CVSS 6.1) — ONLYOFFICE Docs before 8.0.1 allows XSS because a macro is an immediately-invoked function expression (IIFE), …
    CVE-2023-30188 (CVSS 7.5) — Memory Exhaustion vulnerability in ONLYOFFICE Document Server 4.0.3 through 7.3.2 allows remote attackers to c…
    CVE-2023-30186 (CVSS 9.8) — A use after free issue discovered in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote attackers to …
    CVE-2023-30187 (CVSS 9.8) — An out of bounds memory access vulnerability in ONLYOFFICE DocumentServer 4.0.3 through 7.3.2 allows remote at…
    CVE-2022-48422 (CVSS 7.8) — ONLYOFFICE Docs through 7.3 on certain Linux distributions allows local users to gain privileges via a Trojan …
    CVE-2022-29777 (CVSS 9.8) — Onlyoffice Document Server v6.0.0 and below and Core 6.1.0.26 and below were discovered to contain a heap over…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High