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Description

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.

PUBLISHED Reserved 2026-03-06 | Published 2026-03-07 | Updated 2026-03-07 | Assigner VulDB




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
1.7AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

NULL Pointer Dereference

Denial of Service

Product status

1.6.0
affected

1.6.1
affected

Timeline

2026-03-06:Advisory disclosed
2026-03-06:VulDB entry created
2026-03-06:VulDB entry last update

Credits

Oneafter (VulDB User) reporter

References

vuldb.com/?id.349554 (VDB-349554 | xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference) vdb-entry technical-description

vuldb.com/?ctiid.349554 (VDB-349554 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.764647 (Submit #764647 | xlnt-community xlnt commit bceb706 and before NULL Pointer Dereference) third-party-advisory

github.com/xlnt-community/xlnt/issues/140 issue-tracking

github.com/oneafter/0128/blob/main/xl4/repro exploit

github.com/xlnt-community/xlnt/ product

cve.org (CVE-2026-3665)

nvd.nist.gov (CVE-2026-3665)

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