{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-26736 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-26736 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-26736 is a medium-severity vulnerability in Zscaler Client Connector, published on 23 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-26736 and fix it if it is affected.\n\nWhat it is: CVE-2021-26736 is a medium-severity vulnerability in Zscaler Client Connector, published on 23 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-26736 in the wild and no public exploit code.\n\nAffected product: Zscaler Client Connector. 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-2021-26736/ (Markdown: https://insights.sbomify.com/CVE-2021-26736/index.md)","id":"CVE-2021-26736","markdown":"https://insights.sbomify.com/CVE-2021-26736/index.md","name":"CVE-2021-26736","record":{"aliases":["GHSA-cmfg-v75g-8wm3"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Zscaler Client Connector","requires_auth":"low_privilege","summary":"A local attacker can execute arbitrary code with SYSTEM privileges due to insecure binary loading in the Zscaler Client Connector installer.","user_interaction":"required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zscaler","cpe":[{"product":"client_connector","vendor":"zscaler"}],"cvss":{"score":6.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Multiple vulnerabilities in the Zscaler Client Connector Installer and Uninstaller for Windows prior to 3.6 allowed execution of binaries from a low privileged path. A local adversary may be able to execute code with SYSTEM privileges.","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":"ZApp Installer Privilege Escalation Vulnerabilities","id":"CVE-2021-26736","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":"Privilege Escalation Using PID Reuse in ZCC macOS","id":"CVE-2021-26737"},"packages":[],"prev":{"headline":"Untrusted Search Path While Executing REG DELETE by Uninstaller","id":"CVE-2021-26735"},"products":["Client Connector"],"published":"2023-10-23","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2020-11633","kev_date_added":null,"published":"2021-07-15"},{"cvss_score":8.8,"headline":"Anti-Tampering bypass via Repair App functionality","id":"CVE-2024-23463","kev_date_added":null,"published":"2024-04-30"},{"cvss_score":8.2,"headline":"Linux ZCC allows unsigned updates, allowing elevated Code Execution","id":"CVE-2023-28804","kev_date_added":null,"published":"2023-10-23"},{"cvss_score":8.2,"headline":"Open redirect in Client Connector","id":"CVE-2023-28799","kev_date_added":null,"published":"2023-06-22"},{"cvss_score":8.1,"headline":"Output encoding missing in redrurl parameter","id":"CVE-2023-28800","kev_date_added":null,"published":"2023-06-22"},{"cvss_score":7.8,"headline":"Signature validation issue leads to Anti-Tampering bypass","id":"CVE-2024-23456","kev_date_added":null,"published":"2024-08-06"},{"cvss_score":7.8,"headline":"Anti-tampering can be disabled with uninstall password enforced","id":"CVE-2024-23457","kev_date_added":null,"published":"2024-05-01"}],"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":"total"},"state":"PUBLISHED","updated":"2025-02-27","vendors":["Zscaler"]},"summary":"A local attacker can execute arbitrary code with SYSTEM privileges due to insecure binary loading in the Zscaler Client Connector installer.","url":"https://insights.sbomify.com/CVE-2021-26736/"}