CVE-2025-55780

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:artifex:mupdf:*:*:*:*:*:*:*:*", "matchCriteriaId": "E25AB27B-7BB9-49F1-BB6F-C8055F618478", "versionEndExcluding": "1.26.7", "versionStartIncluding": "1.24.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Una desreferencia de puntero nulo ocurre en la funci\u00f3n break_word_for_overflow_wrap() en MuPDF 1.26.4 al renderizar un documento EPUB malformado. Espec\u00edficamente, la funci\u00f3n llama a fz_html_split_flow() para dividir un nodo FLOW_WORD, pero no verifica si node -> next es v\u00e1lido antes de acceder a node -> next -> overflow_wrap, lo que resulta en un fallo si la divisi\u00f3n falla o devuelve una cadena de nodos parcial."}], "id": "CVE-2025-55780", "lastModified": "2026-11-05T23:10:00.150", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-55780", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-09-24T18:36:54.825635Z", "version": "2.0.3"}}]}, "published": "2025-09-23T18:15:34.743", "references": [{"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugs.ghostscript.com/show_bug.cgi?id=708720"}, {"source": "cve@mitre.org", "tags": ["Permissions Required"], "url": "https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=bdd5d241748807378a78a622388e0312332513c5"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/ISH2YU/CVE-2025-55780/tree/main"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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