PDF_OPENTYPE_SBIT_COMPONENT_OOB — OpenType embedded-bitmap component placement exceeds bitmap buffer

high PDF_OPENTYPE_SBIT_COMPONENT_OOB

What it means

EBLC/EBDT compound bitmap glyph metadata positions a component beyond the computed bitmap buffer.

Why it fires

CVE-2023-26369 exploited missing bounds checks in Adobe libCoolType's sfac_GetSbitBitmap when merging embedded bitmap glyph components. The scanner computes the bitmap buffer size from glyph metrics and flags component offsets whose merge index exceeds that buffer.

Other PDF heuristics

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