{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-55780 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-55780 is a high-severity vulnerability in Artifex Mupdf, published on 23 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-55780 and fix it if it is affected.\n\nWhat it is: CVE-2025-55780 is a high-severity vulnerability in Artifex Mupdf, published on 23 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-55780 in the wild and no public exploit code.\n\nAffected product: Artifex Mupdf. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-55780/ (Markdown: https://insights.sbomify.com/CVE-2025-55780/index.md)","id":"CVE-2025-55780","markdown":"https://insights.sbomify.com/CVE-2025-55780/index.md","name":"CVE-2025-55780","record":{"aliases":["DEBIAN-CVE-2025-55780","GHSA-756h-grq9-2jvh","UBUNTU-CVE-2025-55780"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"MuPDF library","requires_auth":"none","summary":"A null pointer dereference in MuPDF allows attackers to cause a denial of service via a malformed EPUB document.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"mupdf","vendor":"artifex"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"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-\u003enext is valid before accessing node-\u003enext-\u003eoverflow_wrap, resulting in a crash if the split fails or returns a partial node chain.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2025-09-24","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2025-09-24T04:24:06Z","kind":"github_poc","ref":"https://github.com/ISH2YU/CVE-2025-55780","stars":0,"title":"Null Pointer Dereference in MuPDF , First CVE discovered by me "}],"tier":"poc_unverified"},"has_fix":true,"headline":"Null dereference in n/a","id":"CVE-2025-55780","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"artifex:mupdf","products":["artifex:mupdf"],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":3,"next":{"headline":"SQL injection in n/a","id":"CVE-2025-55787"},"packages":[],"prev":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2025-55777"},"products":["n/a"],"published":"2025-09-23","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2019-7321","kev_date_added":null,"published":"2019-06-13"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-6525","kev_date_added":null,"published":"2016-09-22"},{"cvss_score":9.3,"headline":"Memory corruption in n/a","id":"CVE-2011-0341","kev_date_added":null,"published":"2011-05-13"},{"cvss_score":8.6,"headline":"Memory corruption in MuPDF","id":"CVE-2016-8728","kev_date_added":null,"published":"2018-04-24"},{"cvss_score":7.8,"headline":"Use after free in mupdf","id":"CVE-2021-3407","kev_date_added":null,"published":"2021-02-23"},{"cvss_score":7.8,"headline":"Use after free in n/a","id":"CVE-2020-16600","kev_date_added":null,"published":"2020-12-09"},{"cvss_score":7.8,"headline":"Integer overflow in n/a","id":"CVE-2012-5340","kev_date_added":null,"published":"2020-01-23"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-09-25","vendors":["n/a"]},"summary":"A null pointer dereference in MuPDF allows attackers to cause a denial of service via a malformed EPUB document.","url":"https://insights.sbomify.com/CVE-2025-55780/"}