{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-28816 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-28816 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-28816 is a high-severity memory corruption vulnerability in Qnap Qts, published on 10 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-28816 and fix it if it is affected.\n\nWhat it is: CVE-2021-28816 is a high-severity memory corruption vulnerability in Qnap Qts, published on 10 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-28816 in the wild and no public exploit code.\n\nAffected product: Qnap Qts. 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-2021-28816/ (Markdown: https://insights.sbomify.com/CVE-2021-28816/index.md)","id":"CVE-2021-28816","markdown":"https://insights.sbomify.com/CVE-2021-28816/index.md","name":"CVE-2021-28816","record":{"aliases":["GHSA-pp5r-cwfq-7whf"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"QNAP NAS firmware","requires_auth":"low_privilege","summary":"Attackers can execute arbitrary code on QNAP NAS devices via a stack buffer overflow in QTS, QuTS hero, and QuTScloud firmware.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"qnap","cpe":[{"product":"qts","vendor":"qnap"},{"product":"quts_hero","vendor":"qnap"},{"product":"qutscloud","vendor":"qnap"}],"cvss":{"score":7.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"A stack buffer overflow vulnerability has been reported to affect QNAP device running QTS, QuTScloud, QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of QTS, QuTScloud, QuTS hero: QTS 4.5.4.1715 build 20210630 and later QTS 5.0.0.1716 build 20210701 and later QTS 4.3.3.1693 build 20210624 and later QTS 4.3.6.1750 build 20210730 and later QuTScloud c4.5.6.1755 and later QuTS hero h4.5.4.1771 build 20210825 and later","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":"Stack Buffer Overflow Vulnerabilities in QTS, QuTS hero, and QuTScloud","id":"CVE-2021-28816","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"qnap:qts","products":["qnap:qts","qnap:quts_hero","qnap:qutscloud"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"TIBCO Rendezvous Windows Platform Installation vulnerability","id":"CVE-2021-28817"},"packages":[],"prev":{"headline":"Insecure Storage of Sensitive Information in myQNAPcloud Link","id":"CVE-2021-28815"},"products":["QTS","QuTS hero","QuTScloud"],"published":"2021-09-10","related":[{"cvss_score":9.8,"headline":"QNAP Network-Attached Storage (NAS) Command Injection","id":"CVE-2020-2509","kev_date_added":"2022-04-11","published":"2021-04-17"},{"cvss_score":9.8,"headline":"QNAP NAS File Station Command Injection","id":"CVE-2018-19949","kev_date_added":"2022-05-24","published":"2020-10-28"},{"cvss_score":9.8,"headline":"QNAP QTS Improper Input Validation","id":"CVE-2019-7193","kev_date_added":"2022-06-08","published":"2019-12-05"},{"cvss_score":8,"headline":"QNAP NAS File Station Cross-Site Scripting","id":"CVE-2018-19943","kev_date_added":"2022-05-24","published":"2020-10-28"},{"cvss_score":6.1,"headline":"QNAP NAS File Station Cross-Site Scripting","id":"CVE-2018-19953","kev_date_added":"2022-05-24","published":"2020-10-28"},{"cvss_score":10,"headline":"QTS, QuTS hero, QuTScloud","id":"CVE-2024-32766","kev_date_added":null,"published":"2024-04-26"},{"cvss_score":10,"headline":"Command injection in n/a","id":"CVE-2017-7876","kev_date_added":null,"published":"2017-06-15"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-09-17","vendors":["QNAP Systems Inc."]},"summary":"Attackers can execute arbitrary code on QNAP NAS devices via a stack buffer overflow in QTS, QuTS hero, and QuTScloud firmware.","url":"https://insights.sbomify.com/CVE-2021-28816/"}