{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2026-102858 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-102858 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-102858 is a high-severity memory corruption vulnerability in Microsoft Microsoft 365, published on 13 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-2026-102858 and fix it if it is affected.\n\nWhat it is: CVE-2026-102858 is a high-severity memory corruption vulnerability in Microsoft Microsoft 365, published on 13 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-2026-102858 in the wild and no public exploit code.\n\nAffected product: Microsoft Microsoft 365. 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-2026-102858/ (Markdown: https://insights.sbomify.com/CVE-2026-102858/index.md)","id":"CVE-2026-102858","markdown":"https://insights.sbomify.com/CVE-2026-102858/index.md","name":"CVE-2026-102858","record":{"aliases":["GHSA-r6w3-7r2g-5962"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Microsoft Office OneNote","requires_auth":"none","summary":"Heap-based buffer overflow in Microsoft Office OneNote allows remote attackers to execute arbitrary code over the network.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"microsoft_365","vendor":"microsoft"},{"product":"office_2021","vendor":"microsoft"},{"product":"office_2024","vendor":"microsoft"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"Heap-based buffer overflow in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Microsoft Office OneNote Remote Code Execution Vulnerability","id":"CVE-2026-102858","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:microsoft_365","products":["microsoft:microsoft_365","microsoft:office_2021","microsoft:office_2024"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Microsoft Office SharePoint Spoofing Vulnerability","id":"CVE-2026-102859"},"packages":[],"prev":{"headline":"Microsoft Office Visio Remote Code Execution Vulnerability","id":"CVE-2026-102857"},"products":["Microsoft Office 365 for Mac","Microsoft Office LTSC for Mac 2021","Microsoft Office LTSC for Mac 2024"],"published":"2026-10-13","related":[{"cvss_score":6.5,"headline":"Microsoft Word Information Disclosure Vulnerability","id":"CVE-2026-70105","kev_date_added":null,"published":"2026-08-20"}],"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":"total"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["Microsoft"]},"summary":"Heap-based buffer overflow in Microsoft Office OneNote allows remote attackers to execute arbitrary code over the network.","url":"https://insights.sbomify.com/CVE-2026-102858/"}