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CVE-2026-3664— xlnt-community xlnt Encrypted XLSX File compound_document.cpp read_directory out-of-bounds

CVSS 3.3 · Low EPSS 0.02% · P6
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I. Basic Information for CVE-2026-3664

Vulnerability Information
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Vulnerability Title
xlnt-community xlnt Encrypted XLSX File compound_document.cpp read_directory out-of-bounds
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was determined in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::compound_document::read_directory of the file source/detail/cryptography/compound_document.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to out-of-bounds read. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called 147. Applying a patch is advised to resolve this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
xlnt 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
xlnt是xlnt-community开源的一个C++语言库。 xlnt-community xlnt 1.6.1及之前版本存在缓冲区错误漏洞，该漏洞源于对文件source/detail/cryptography/compound_document.cpp中函数read_directory的错误操作，可能导致越界读取。
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

VendorProductAffected VersionsCPESubscribe
xlnt-communityxlnt 1.6.0 -

II. Public POCs for CVE-2026-3664

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III. Intelligence Information for CVE-2026-3664

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Same Patch Batch · xlnt-community · 2026-03-07 · 3 CVEs total

CVE-2026-36633.3 LOWxlnt-community xlnt XLSX File compound_document.cpp xsgetn out-of-bounds
CVE-2026-36653.3 LOWxlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer derefere

IV. Related Vulnerabilities

Same product: xlnt
Same vendor: xlnt-community
Same weakness: CWE-125

V. Comments for CVE-2026-3664

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