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Search Results (2 CVEs found)

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CVE Vendors Products Updated CVSS v3.1
CVE-2026-26824 2 Libxls, Libxls Project 2 Libxls, Libxls 2026-06-05 6.5 Medium
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
CVE-2026-26825 2 Libxls, Libxls Project 2 Libxls, Libxls 2026-06-05 5.3 Medium
A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xls_parseWorkBook() and is triggered by uninitialized heap memory originating from the OLE layer (ole2_read). The flaw is detectable with MemorySanitizer (MSAN) and can lead to undefined behavior, incorrect parsing logic, or potential information disclosure.