{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-21667 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-21667 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-21667 is a critical missing authorization vulnerability in Veeam Backup and Replication, published on 12 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-21667 and fix it if it is affected.\n\nWhat it is: CVE-2026-21667 is a critical missing authorization vulnerability in Veeam Backup and Replication, published on 12 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-21667 in the wild and no public exploit code.\n\nAffected product: Veeam Backup and Replication. 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-2026-21667/ (Markdown: https://insights.sbomify.com/CVE-2026-21667/index.md)","id":"CVE-2026-21667","markdown":"https://insights.sbomify.com/CVE-2026-21667/index.md","name":"CVE-2026-21667","record":{"aliases":["GHSA-hccx-359g-p95f"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Backup and Replication","requires_auth":"low_privilege","summary":"An authenticated domain user can execute arbitrary code on the Veeam Backup Server due to improper access controls.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"veeam_backup_\\\u0026_replication","vendor":"veeam"}],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"A vulnerability allowing an authenticated domain user to perform remote code execution (RCE) on the Backup Server.","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":"Missing authorization in Backup and Replication","id":"CVE-2026-21667","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Missing authorization in Backup and Replication","id":"CVE-2026-21668"},"packages":[],"prev":{"headline":"Missing authorization in Backup and Replication","id":"CVE-2026-21666"},"products":["Backup and Replication"],"published":"2026-03-12","related":[{"cvss_score":9.8,"headline":"Veeam Backup and Replication Deserialization","id":"CVE-2024-40711","kev_date_added":"2024-10-17","published":"2024-09-07"},{"cvss_score":9.8,"headline":"Veeam Backup \u0026 Replication Remote Code Execution","id":"CVE-2022-26501","kev_date_added":"2022-12-13","published":"2022-03-17"},{"cvss_score":8.8,"headline":"Veeam Backup \u0026 Replication Remote Code Execution","id":"CVE-2022-26500","kev_date_added":"2022-12-13","published":"2022-03-17"},{"cvss_score":7.5,"headline":"Veeam Backup \u0026 Replication Cloud Connect Missing Authentication for Critical Function","id":"CVE-2023-27532","kev_date_added":"2023-08-22","published":"2023-03-10"},{"cvss_score":10,"headline":"Missing authorization in Backup and Replication","id":"CVE-2026-21666","kev_date_added":null,"published":"2026-03-12"},{"cvss_score":10,"headline":"Code injection in Backup and Replication","id":"CVE-2026-21669","kev_date_added":null,"published":"2026-03-12"}],"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":"2026-03-13","vendors":["Veeam"]},"summary":"An authenticated domain user can execute arbitrary code on the Veeam Backup Server due to improper access controls.","url":"https://insights.sbomify.com/CVE-2026-21667/"}