{"answers":{"affected":"It affects 6 products.","exploited":"There is no known exploitation of CVE-2026-55043 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-55043 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-55043 is a high-severity memory corruption vulnerability in Microsoft 365 Apps, published on 14 Jul 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-2026-55043 and fix it if it is affected.\n\nWhat it is: CVE-2026-55043 is a high-severity memory corruption vulnerability in Microsoft 365 Apps, published on 14 Jul 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-2026-55043 in the wild and no public exploit code.\n\nAffected product: Microsoft 365 Apps. 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-2026-55043/ (Markdown: https://insights.sbomify.com/CVE-2026-55043/index.md)","id":"CVE-2026-55043","markdown":"https://insights.sbomify.com/CVE-2026-55043/index.md","name":"CVE-2026-55043","record":{"aliases":["GHSA-jhv5-3wc2-f8jm"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Microsoft PowerPoint","requires_auth":"none","summary":"An attacker can execute arbitrary code locally via a heap-based buffer overflow in Microsoft PowerPoint.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"365_apps","vendor":"microsoft"},{"product":"microsoft_365","vendor":"microsoft"},{"product":"office_2019","vendor":"microsoft"},{"product":"office_2021","vendor":"microsoft"},{"product":"office_2024","vendor":"microsoft"},{"product":"powerpoint","vendor":"microsoft"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/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-190","name":"Integer Overflow or Wraparound"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.","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 PowerPoint Remote Code Execution Vulnerability","id":"CVE-2026-55043","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:365_apps","products":["microsoft:365_apps","microsoft:microsoft_365","microsoft:office_2019","microsoft:office_2021","microsoft:office_2024","microsoft:powerpoint"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Microsoft Excel Remote Code Execution Vulnerability","id":"CVE-2026-55044"},"packages":[],"prev":{"headline":"Microsoft Office Information Disclosure Vulnerability","id":"CVE-2026-55042"},"products":["Microsoft 365 Apps for Enterprise","Microsoft Office 2019","Microsoft Office 365 for Mac","Microsoft Office LTSC 2021","Microsoft Office LTSC 2024","Microsoft Office LTSC for Mac 2021","Microsoft Office LTSC for Mac 2024","Microsoft PowerPoint 2016"],"published":"2026-07-14","related":[{"cvss_score":9.8,"headline":"Microsoft Outlook Improper Input Validation","id":"CVE-2024-21413","kev_date_added":"2025-02-06","published":"2024-02-13"},{"cvss_score":9.8,"headline":"Microsoft Office Outlook Privilege Escalation","id":"CVE-2023-23397","kev_date_added":"2023-03-14","published":"2023-03-14"},{"cvss_score":8.8,"headline":"Microsoft Project Remote Code Execution Vulnerability","id":"CVE-2024-38189","kev_date_added":"2024-08-13","published":"2024-08-13"},{"cvss_score":8.8,"headline":"Microsoft Outlook Security Feature Bypass","id":"CVE-2023-35311","kev_date_added":"2023-07-11","published":"2023-07-11"},{"cvss_score":7.8,"headline":"Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision","id":"CVE-2026-21514","kev_date_added":"2026-02-10","published":"2026-02-10"},{"cvss_score":7.8,"headline":"Microsoft Office Security Feature Bypass","id":"CVE-2026-21509","kev_date_added":"2026-01-26","published":"2026-01-26"},{"cvss_score":7.8,"headline":"Microsoft Excel Security Feature Bypass","id":"CVE-2021-42292","kev_date_added":"2021-11-17","published":"2021-11-10"}],"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":"2026-10-28","vendors":["Microsoft"]},"summary":"An attacker can execute arbitrary code locally via a heap-based buffer overflow in Microsoft PowerPoint.","url":"https://insights.sbomify.com/CVE-2026-55043/"}