{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-25920 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-25920 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-25920 is a medium-severity memory corruption vulnerability in sumatrapdfreader sumatrapdf, published on 9 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-25920 and fix it if it is affected.\n\nWhat it is: CVE-2026-25920 is a medium-severity memory corruption vulnerability in sumatrapdfreader sumatrapdf, published on 9 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-25920 in the wild and no public exploit code.\n\nAffected product: sumatrapdfreader sumatrapdf. 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-2026-25920/ (Markdown: https://insights.sbomify.com/CVE-2026-25920/index.md)","id":"CVE-2026-25920","markdown":"https://insights.sbomify.com/CVE-2026-25920/index.md","name":"CVE-2026-25920","record":{"aliases":["GHSA-5mwx-65x7-cffp"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PDF reader","requires_auth":"none","summary":"An attacker can cause a denial of service by tricking a user into opening a crafted MOBI file in SumatraPDF.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"sumatrapdf","vendor":"sumatrapdfreader"}],"cvss":{"score":5.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, a heap out-of-bounds read vulnerability exists in SumatraPDF's MOBI HuffDic decompressor. The bounds check in AddCdicData() only validates half the range that DecodeOne() actually accesses. Opening a crafted .mobi file can read nearly (1 \u003c\u003c codeLength) bytes beyond the CDIC dictionary buffer, leading to a crash.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"SumatraPDF has a heap out-of-bounds read in MOBI HuffDic decompressor","id":"CVE-2026-25920","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Gogs: Cross-repository LFS object overwrite via missing content hash verification","id":"CVE-2026-25921"},"packages":[],"prev":{"headline":"unity-cli Exposes Plaintext Credentials in Debug Logs (sign-package command)","id":"CVE-2026-25918"},"products":["sumatrapdf"],"published":"2026-02-09","related":[{"cvss_score":9.3,"headline":"Memory corruption in n/a","id":"CVE-2012-4895","kev_date_added":null,"published":"2012-10-05"},{"cvss_score":9.3,"headline":"Memory corruption in n/a","id":"CVE-2012-4896","kev_date_added":null,"published":"2012-10-05"},{"cvss_score":9.3,"headline":"Memory corruption in n/a","id":"CVE-2009-4117","kev_date_added":null,"published":"2009-12-01"},{"cvss_score":8.6,"headline":"SumatraPDF has an Untrusted Search Path in sumatrapdf/src/AppTools.cpp","id":"CVE-2026-23512","kev_date_added":null,"published":"2026-01-14"},{"cvss_score":7.8,"headline":"Untrusted Search Path in SumatraPDF Reader (explorer.exe on Windows)","id":"CVE-2026-25880","kev_date_added":null,"published":"2026-02-09"},{"cvss_score":7.8,"headline":"Use after free in n/a","id":"CVE-2013-2830","kev_date_added":null,"published":"2018-02-08"},{"cvss_score":7.5,"headline":"SumatraPDF Update MITM -\u003e Arbitrary Code Execution","id":"CVE-2026-25961","kev_date_added":null,"published":"2026-02-09"}],"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)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-02-11","vendors":["sumatrapdfreader"]},"summary":"An attacker can cause a denial of service by tricking a user into opening a crafted MOBI file in SumatraPDF.","url":"https://insights.sbomify.com/CVE-2026-25920/"}