CVE-2026-41034
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I. Basic Information for CVE-2026-41034
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
DocumentServer 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DocumentServer是ONLYOFFICE开源的一个在线协作办公套件，支持文档、表格、演示文稿等格式的实时协同编辑。 DocumentServer 9.3.0之前版本存在安全漏洞，该漏洞源于XLS处理中存在不可信指针取消引用，可能导致信息泄露和ASLR绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Ascensio | ONLYOFFICE DocumentServer | 0 ~ 9.3.0 | - |
II. Public POCs for CVE-2026-41034
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same vendor: Ascensio
Same weakness: CWE-125
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XML::LibXML versions through 2.0210 for Perl read out-of-bou - CVE-2026-6104
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Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2026-41034
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