{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-103678 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-103678 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-103678 is a medium-severity memory corruption vulnerability in tnef_project:tnef, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-103678 and fix it if it is affected.\n\nWhat it is: CVE-2026-103678 is a medium-severity memory corruption vulnerability in tnef_project:tnef, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-103678 in the wild and no public exploit code.\n\nAffected product: tnef_project:tnef. 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-2026-103678/ (Markdown: https://insights.sbomify.com/CVE-2026-103678/index.md)","id":"CVE-2026-103678","markdown":"https://insights.sbomify.com/CVE-2026-103678/index.md","name":"CVE-2026-103678","record":{"aliases":["DEBIAN-CVE-2026-103678","GHSA-8r4j-263j-fh85","UBUNTU-CVE-2026-103678"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"TNEF parsing library","requires_auth":"none","summary":"An attacker can cause a crash or leak memory by providing a crafted file with uncompressed RTF data to the TNEF library.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"fedora","cpe":[{"product":"tnef","vendor":"tnef_project"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"A flaw was found in tnef. An attacker can exploit this vulnerability by providing a specially crafted file containing uncompressed Rich Text Format (RTF) data. Because the application fails to properly validate input buffer boundaries before copying data in get_rtf_data_from_buf(), reading beyond the allocated memory occurs. This flaw can cause the application to crash, leading to a Denial of Service (DoS), or leak sensitive memory contents into extracted output files.","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":"Tnef: heap out-of-bounds read in get_rtf_data_from_buf() via uncompressed rtf mapi value","id":"CVE-2026-103678","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":"Tnef: use-after-free and double-free in get_body_files() via multi-value body extraction","id":"CVE-2026-103679"},"packages":[],"prev":{"headline":"HMS Networks PEAK-System PCAN Windows drivers Improper Validation of Array Index","id":"CVE-2026-103672"},"products":["tnef_project:tnef"],"published":"2026-10-01","related":[{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2017-8911","kev_date_added":null,"published":"2017-05-12"},{"cvss_score":6.5,"headline":"Tnef: use-after-free and double-free in get_body_files() via multi-value body extraction","id":"CVE-2026-103679","kev_date_added":null,"published":"2026-10-01"},{"cvss_score":3.1,"headline":"Tnef: heap buffer overflow in find_free_number() via numbered-backup suffix generation","id":"CVE-2026-103680","kev_date_added":null,"published":"2026-10-01"}],"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":"2026-10-01","vendors":["tnef_project"]},"summary":"An attacker can cause a crash or leak memory by providing a crafted file with uncompressed RTF data to the TNEF library.","url":"https://insights.sbomify.com/CVE-2026-103678/"}