PT-2026-46058 · Undefined · Undefined
Published
2026-06-03
·
Updated
2026-06-03
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CVE-2026-26825
None
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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.
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Affected Products
Undefined