{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-31426 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-31426 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-31426 is a high-severity vulnerability in Parallels Parallels Desktop, published on 29 Apr 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-2021-31426 and fix it if it is affected.\n\nWhat it is: CVE-2021-31426 is a high-severity vulnerability in Parallels Parallels Desktop, published on 29 Apr 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-2021-31426 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-2021-31426/ (Markdown: https://insights.sbomify.com/CVE-2021-31426/index.md)","id":"CVE-2021-31426","markdown":"https://insights.sbomify.com/CVE-2021-31426/index.md","name":"CVE-2021-31426","record":{"aliases":["GHSA-4gp2-5wrm-9g4v"],"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 and execute arbitrary code in the kernel via an integer overflow in Parallels Tools.","user_interaction":"not_required","vuln_class":"integer_overflow"},"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-190","name":"Integer Overflow or Wraparound"}],"description":"This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.2-49151. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Parallels Tools component. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel on the target guest system. Was ZDI-CAN-12791.","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":"Integer overflow in Desktop","id":"CVE-2021-31426","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"parallels:parallels_desktop","products":["parallels:parallels_desktop"],"type":"integer_overflow","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Race condition in Desktop","id":"CVE-2021-31427"},"packages":[],"prev":{"headline":"Integer overflow in Desktop","id":"CVE-2021-31425"},"products":["Desktop"],"published":"2021-04-29","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":"Privilege escalation in Desktop","id":"CVE-2021-34864","kev_date_added":null,"published":"2021-10-25"},{"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":"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":"2024-08-03","vendors":["Parallels"]},"summary":"Local attackers can escalate privileges and execute arbitrary code in the kernel via an integer overflow in Parallels Tools.","url":"https://insights.sbomify.com/CVE-2021-31426/"}