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CVE-2025-55780
Published: Sep 23, 2025
Modified: Sep 25, 2025
PUBLISHED
Description
A null pointer dereference occurs in the function break_word_for_overflow_wrap() in MuPDF 1.26.4 when rendering a malformed EPUB document. Specifically, the function calls fz_html_split_flow() to split a FLOW_WORD node, but does not check if node->next is valid before accessing node->next->overflow_wrap, resulting in a crash if the split fails or returns a partial node chain.
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
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