CVE-2026-3665

low-risk
Published 2026-03-07

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.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.3/10 Low
LOCAL / LOW complexity

Affected Products (1)

Xlnt

Affected Vendors

Xlnt-Community

References (6)

Exploit https://github.com/oneafter/0128/blob/main/xl4/repro
Product https://github.com/xlnt-community/xlnt/
Exploit https://github.com/xlnt-community/xlnt/issues/140
Permissions Required https://vuldb.com/?ctiid.349554
Third Party Advisory https://vuldb.com/?id.349554
Third Party Advisory https://vuldb.com/?submit.764647
18
/ 100
low-risk
Severity 13/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal