CVE-2026-3663

LOW
2026-03-07 [email protected]
3.3
CVSS 3.1

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
PoC Detected
Mar 10, 2026 - 20:29 vuln.today
Public exploit code
CVE Published
Mar 07, 2026 - 15:15 nvd
LOW 3.3

Tags

Buffer Overflow

Description

A vulnerability was found in xlnt-community xlnt up to 1.6.1. This issue affects the function xlnt::detail::compound_document_istreambuf::xsgetn of the file source/detail/cryptography/compound_document.cpp of the component XLSX File Parser. Performing a manipulation results in out-of-bounds read. The attack is only possible with local access. The exploit has been made public and could be used. The patch is named 147. It is recommended to apply a patch to fix this issue.

Analysis

A vulnerability was found in xlnt-community xlnt up to 1.6.1. This issue affects the function xlnt::detail::compound_document_istreambuf::xsgetn of the file source/detail/cryptography/compound_document.cpp of the component XLSX File Parser. …

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Remediation

During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.

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Priority Score

37
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +16
POC: +20

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CVE-2026-3663 vulnerability details – vuln.today
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