{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21789 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21789 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21789 is a high-severity vulnerability in Iobit, published on 7 Jul 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-2021-21789 and fix it if it is affected.\n\nWhat it is: CVE-2021-21789 is a high-severity vulnerability in Iobit, published on 7 Jul 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-2021-21789 in the wild and no public exploit code.\n\nAffected product: Iobit. 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-2021-21789/ (Markdown: https://insights.sbomify.com/CVE-2021-21789/index.md)","id":"CVE-2021-21789","markdown":"https://insights.sbomify.com/CVE-2021-21789/index.md","name":"CVE-2021-21789","record":{"aliases":["GHSA-wg24-w7m2-vvwp"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["privilege_escalation","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"System optimization software","requires_auth":"low_privilege","summary":"A local attacker can escalate privileges by sending a malicious IRP to the IOBit Advanced SystemCare Ultimate driver, allowing arbitrary port writes.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"advanced_systemcare_ultimate","vendor":"iobit"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-782","name":"Exposed IOCTL with Insufficient Access Control"}],"description":"A privilege escalation vulnerability exists in the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O write requests. During IOCTL 0x9c40a0e0, the first dword passed in the input buffer is the device port to write to and the dword at offset 4 is the value to write via the OUT instruction. A local attacker can send a malicious IRP to trigger this vulnerability.","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 Iobit","id":"CVE-2021-21789","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"privilege_escalation","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Information disclosure in IOBit","id":"CVE-2021-21790"},"packages":[],"prev":{"headline":"Privilege escalation in Iobit","id":"CVE-2021-21788"},"products":["Iobit"],"published":"2021-07-07","related":[{"cvss_score":8.8,"headline":"Privilege escalation in Iobit","id":"CVE-2021-21786","kev_date_added":null,"published":"2021-07-07"},{"cvss_score":8.8,"headline":"Privilege escalation in Iobit","id":"CVE-2021-21787","kev_date_added":null,"published":"2021-07-07"},{"cvss_score":8.8,"headline":"Privilege escalation in Iobit","id":"CVE-2021-21788","kev_date_added":null,"published":"2021-07-07"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2018-9040","kev_date_added":null,"published":"2018-03-27"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2018-9041","kev_date_added":null,"published":"2018-03-27"},{"cvss_score":7.8,"headline":"Denial of service in n/a","id":"CVE-2018-9042","kev_date_added":null,"published":"2018-03-27"}],"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":"2024-08-03","vendors":["n/a"]},"summary":"A local attacker can escalate privileges by sending a malicious IRP to the IOBit Advanced SystemCare Ultimate driver, allowing arbitrary port writes.","url":"https://insights.sbomify.com/CVE-2021-21789/"}