{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"mupdf","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NP2GQKX0NCMR5KXP1PHYAX","modified_at":"2026-09-01T20:05:54.506238688Z","published_at":"2025-09-23T18:15:34.743Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-55780","https://security-tracker.debian.org/tracker/CVE-2025-55780"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-55780","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-55780"}],"summary":"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 spli"}