Medium severity6.5NVD Advisory· Published Jun 3, 2026· Updated Sep 23, 2026
CVE-2026-26824
CVE-2026-26824
Description
libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in read_MSAT() is not fully initialized before being consumed by ole2_validate_sector_chain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file
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Affected products
4Patches
Vulnerability mechanics
References
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