{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2026-21639 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-21639 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-21639 is a high-severity command injection vulnerability in Ubiquiti Inc airFiber AF60, published on 8 Jan 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-2026-21639 and fix it if it is affected.\n\nWhat it is: CVE-2026-21639 is a high-severity command injection vulnerability in Ubiquiti Inc airFiber AF60, published on 8 Jan 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-2026-21639 in the wild and no public exploit code.\n\nAffected product: Ubiquiti Inc airFiber AF60. 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-2026-21639/ (Markdown: https://insights.sbomify.com/CVE-2026-21639/index.md)","id":"CVE-2026-21639","markdown":"https://insights.sbomify.com/CVE-2026-21639/index.md","name":"CVE-2026-21639","record":{"aliases":["GHSA-9vw7-2gjw-jc6x"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Ubiquiti wireless device","requires_auth":"none","summary":"A remote attacker in Wi-Fi range can execute arbitrary code on Ubiquiti airMAX and airFiber devices via a vulnerability in the wireless protocol.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"airfiber_af60-xg_firmware","vendor":"ui"},{"product":"airfiber_af60_firmware","vendor":"ui"},{"product":"airmax_ac_firmware","vendor":"ui"},{"product":"airmax_m_firmware","vendor":"ui"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-77","name":"Improper Neutralization of Special Elements used in a Command"},{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"A malicious actor in Wi-Fi range of the affected product could leverage a vulnerability in the airMAX Wireless Protocol to achieve a remote code execution (RCE) within the affected product.","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":"Command injection in airFiber AF60","id":"CVE-2026-21639","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in Revive Adserver","id":"CVE-2026-21640"},"packages":[],"prev":{"headline":"Command injection in UBB","id":"CVE-2026-21638"},"products":["airFiber AF60","airFiber AF60-XG","airMAX AC","airMAX M"],"published":"2026-01-08","related":[],"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":"partial"},"state":"PUBLISHED","updated":"2026-07-30","vendors":["Ubiquiti Inc"]},"summary":"A remote attacker in Wi-Fi range can execute arbitrary code on Ubiquiti airMAX and airFiber devices via a vulnerability in the wireless protocol.","url":"https://insights.sbomify.com/CVE-2026-21639/"}