{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-34864 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-34864 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-34864 is a high-severity vulnerability in Parallels Parallels Desktop, published on 25 Oct 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-2021-34864 and fix it if it is affected.\n\nWhat it is: CVE-2021-34864 is a high-severity vulnerability in Parallels Parallels Desktop, published on 25 Oct 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-2021-34864 in the wild and no public exploit code.\n\nAffected product: Parallels Parallels Desktop. 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-2021-34864/ (Markdown: https://insights.sbomify.com/CVE-2021-34864/index.md)","id":"CVE-2021-34864","markdown":"https://insights.sbomify.com/CVE-2021-34864/index.md","name":"CVE-2021-34864","record":{"aliases":["GHSA-84f6-qcw2-4r4x"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["privilege_escalation","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Parallels Desktop","requires_auth":"low_privilege","summary":"Local attackers can escalate privileges to execute arbitrary code in the hypervisor context via improper access control in WinAppHelper.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"zdi","cpe":[{"product":"parallels_desktop","vendor":"parallels"}],"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-284","name":"Improper Access Control"}],"description":"This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3 (49160). An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the WinAppHelper component. The issue results from the lack of proper access control. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13543.","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 Desktop","id":"CVE-2021-34864","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"parallels:parallels_desktop","products":["parallels:parallels_desktop"],"type":"privilege_escalation","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Auth bypass in Multiple Routers","id":"CVE-2021-34865"},"packages":[],"prev":{"headline":"Memory corruption in DAP-2020","id":"CVE-2021-34863"},"products":["Desktop"],"published":"2021-10-25","related":[{"cvss_score":8.8,"headline":"Path traversal in Parallels Desktop for Mac","id":"CVE-2025-31359","kev_date_added":null,"published":"2025-06-03"},{"cvss_score":8.8,"headline":"Memory corruption in Desktop","id":"CVE-2021-31420","kev_date_added":null,"published":"2021-04-29"},{"cvss_score":8.8,"headline":"Memory corruption in Desktop","id":"CVE-2021-31424","kev_date_added":null,"published":"2021-04-29"},{"cvss_score":8.8,"headline":"Integer overflow in Desktop","id":"CVE-2021-31425","kev_date_added":null,"published":"2021-04-29"},{"cvss_score":8.8,"headline":"Integer overflow in Desktop","id":"CVE-2021-31426","kev_date_added":null,"published":"2021-04-29"},{"cvss_score":8.8,"headline":"Memory corruption in Desktop","id":"CVE-2021-27242","kev_date_added":null,"published":"2021-03-29"}],"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":"2024-08-04","vendors":["Parallels"]},"summary":"Local attackers can escalate privileges to execute arbitrary code in the hypervisor context via improper access control in WinAppHelper.","url":"https://insights.sbomify.com/CVE-2021-34864/"}