{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-20135 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-20135 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-20135 is a medium-severity vulnerability in Tenable Nessus, published on 2 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20135 and fix it if it is affected.\n\nWhat it is: CVE-2021-20135 is a medium-severity vulnerability in Tenable Nessus, published on 2 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-20135 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-2021-20135/ (Markdown: https://insights.sbomify.com/CVE-2021-20135/index.md)","id":"CVE-2021-20135","markdown":"https://insights.sbomify.com/CVE-2021-20135/index.md","name":"CVE-2021-20135","record":{"aliases":["GHSA-8pfq-m65h-x2qr"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Vulnerability Scanner","requires_auth":"high_privilege","summary":"Local administrators can escalate privileges and execute arbitrary code on hosts running the Nessus Agent.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"tenable","cpe":[{"product":"nessus","vendor":"tenable"}],"cvss":{"score":6.7,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"Nessus versions 8.15.2 and earlier were found to contain a local privilege escalation vulnerability which could allow an authenticated, local administrator to run specific executables on the Nessus Agent host. Tenable has included a fix for this issue in Nessus 10.0.0. The installation files can be obtained from the Tenable Downloads Portal (https://www.tenable.com/downloads/nessus).","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","id":"CVE-2021-20135","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 ManageEngine Log360","id":"CVE-2021-20136"},"packages":[],"prev":{"headline":"Path traversal in Quagga Services on D-Link DIR-2640 Routers","id":"CVE-2021-20134"},"products":["Nessus"],"published":"2021-11-02","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":"Local administrators can escalate privileges and execute arbitrary code on hosts running the Nessus Agent.","url":"https://insights.sbomify.com/CVE-2021-20135/"}