{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20106 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20106 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20106 is a medium-severity vulnerability in Tenable Nessus, published on 21 Jul 2021. 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-2021-20106 and fix it if it is affected.\n\nWhat it is: CVE-2021-20106 is a medium-severity vulnerability in Tenable Nessus, published on 21 Jul 2021. 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-2021-20106 in the wild and no public exploit code.\n\nAffected product: Tenable Nessus. 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-2021-20106/ (Markdown: https://insights.sbomify.com/CVE-2021-20106/index.md)","id":"CVE-2021-20106","markdown":"https://insights.sbomify.com/CVE-2021-20106/index.md","name":"CVE-2021-20106","record":{"aliases":["GHSA-qm76-fv6h-2pxw"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Nessus Agent","requires_auth":"high_privilege","summary":"A Nessus administrator can upload a crafted file to gain administrator privileges on the host, requiring an upgrade to mitigate.","user_interaction":"required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"tenable","cpe":[{"product":"nessus","vendor":"tenable"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"Nessus Agent versions 8.2.5 and earlier were found to contain a privilege escalation vulnerability which could allow a Nessus administrator user to upload a specially crafted file that could lead to gaining administrator privileges on the Nessus host.","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":"Privilege escalation in Nessus Agent","id":"CVE-2021-20106","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"tenable:nessus","products":["tenable:nessus"],"type":"privilege_escalation","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Missing authorization in SLOAN","id":"CVE-2021-20107"},"packages":[],"prev":{"headline":"Open redirect in AppNitro Machform","id":"CVE-2021-20105"},"products":["Nessus Agent"],"published":"2021-07-21","related":[{"cvss_score":8.8,"headline":"Command injection in Tenable.io, Tenable.sc and Nessus","id":"CVE-2022-4313","kev_date_added":null,"published":"2023-03-15"},{"cvss_score":8.8,"headline":"Privilege escalation in Tenable.io, Tenable.sc, Nessus","id":"CVE-2023-0524","kev_date_added":null,"published":"2023-02-01"},{"cvss_score":8.8,"headline":"Privilege escalation in Nessus","id":"CVE-2023-0101","kev_date_added":null,"published":"2023-01-20"},{"cvss_score":8.8,"headline":"Privilege escalation in Nessus","id":"CVE-2022-32973","kev_date_added":null,"published":"2022-06-21"},{"cvss_score":8.4,"headline":"Local Privilege Escalation","id":"CVE-2025-36630","kev_date_added":null,"published":"2025-07-01"},{"cvss_score":8.1,"headline":"Path traversal in Tenable Nessus","id":"CVE-2019-3974","kev_date_added":null,"published":"2019-08-15"},{"cvss_score":7.8,"headline":"Path traversal in Tenable Nessus for Windows and Tenable Nessus Agent for Windows","id":"CVE-2020-5793","kev_date_added":null,"published":"2020-11-05"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"A Nessus administrator can upload a crafted file to gain administrator privileges on the host, requiring an upgrade to mitigate.","url":"https://insights.sbomify.com/CVE-2021-20106/"}