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CVE-2026-3665

MEDIUM CVSS 4.0: 4.8 EPSS 0.02%
Updated Mar 07, 2026
Parameter Value
CVSS 4.8 (MEDIUM)
Type CWE-476 (NULL Pointer Dereference), CWE-404 (Improper Resource Shutdown or Release)
Public PoC No

A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference.

The attack must be carried out locally. The exploit is publicly available and might be used.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption

CVSS Vector v4.0