{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-16991 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-16991 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-16991 is a high-severity vulnerability in Ibm Aix, published on 20 Aug 2026. 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-2026-16991 and fix it if it is affected.\n\nWhat it is: CVE-2026-16991 is a high-severity vulnerability in Ibm Aix, published on 20 Aug 2026. 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-2026-16991 in the wild and no public exploit code.\n\nAffected product: Ibm Aix. 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-2026-16991/ (Markdown: https://insights.sbomify.com/CVE-2026-16991/index.md)","id":"CVE-2026-16991","markdown":"https://insights.sbomify.com/CVE-2026-16991/index.md","name":"CVE-2026-16991","record":{"aliases":["GHSA-h9w2-4pvq-xvc7"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"IBM AIX OS","requires_auth":"low_privilege","summary":"A local attacker can gain elevated privileges on IBM AIX and PowerVM VIOS due to improper handling of symbolic links.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"ibm","cpe":[{"product":"aix","vendor":"ibm"},{"product":"vios","vendor":"ibm"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-269","name":"Improper Privilege Management"}],"description":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to improper handling of symbolic links.","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":"Vulnerabilities in IBM AIX and PowerVM VIOS","id":"CVE-2026-16991","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"ibm:aix","products":["ibm:aix","ibm:vios"],"type":"privilege_escalation","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Create by Mediavine \u003c 2.5.4 - Unauthenticated Unpublished Content Disclosure and Publication","id":"CVE-2026-16992"},"packages":[],"prev":{"headline":"Payment Button for PayPal \u003c= 1.2.3.44 - Unauthenticated Payment Price Manipulation","id":"CVE-2026-16990"},"products":["AIX","PowerVM VIOS"],"published":"2026-08-20","related":[{"cvss_score":10,"headline":"AIX Code Execution","id":"CVE-2025-36250","kev_date_added":null,"published":"2025-11-13"},{"cvss_score":10,"headline":"IBM AIX command execution","id":"CVE-2024-56346","kev_date_added":null,"published":"2025-03-18"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2010-3187","kev_date_added":null,"published":"2010-08-30"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2009-3699","kev_date_added":null,"published":"2009-10-15"},{"cvss_score":10,"headline":"Auth bypass in n/a","id":"CVE-2009-3517","kev_date_added":null,"published":"2009-10-01"},{"cvss_score":10,"headline":"Command injection in n/a","id":"CVE-2006-5008","kev_date_added":null,"published":"2006-09-27"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2005-4272","kev_date_added":null,"published":"2005-12-15"}],"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":"2026-08-27","vendors":["IBM"]},"summary":"A local attacker can gain elevated privileges on IBM AIX and PowerVM VIOS due to improper handling of symbolic links.","url":"https://insights.sbomify.com/CVE-2026-16991/"}