{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-11857 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-11857 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-11857 is a high-severity unsafe deserialization vulnerability in Quanos Solutions GmbH SCHEMA ST4, published on 17 Jun 2026. 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-2026-11857 and fix it if it is affected.\n\nWhat it is: CVE-2026-11857 is a high-severity unsafe deserialization vulnerability in Quanos Solutions GmbH SCHEMA ST4, published on 17 Jun 2026. 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-2026-11857 in the wild and no public exploit code.\n\nAffected product: Quanos Solutions GmbH SCHEMA ST4. 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-2026-11857/ (Markdown: https://insights.sbomify.com/CVE-2026-11857/index.md)","id":"CVE-2026-11857","markdown":"https://insights.sbomify.com/CVE-2026-11857/index.md","name":"CVE-2026-11857","record":{"aliases":["GHSA-fmx7-jmr3-4jw2"],"analysis":{"component_type":"desktop_application","fix_type":"no_fix_stated","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"SCHEMA ST4 Client","requires_auth":"low_privilege","summary":"Local attackers can exploit insecure .NET Remoting deserialization in the update service to execute arbitrary code with SYSTEM privileges.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"SEC-VLab","cpe":[],"cvss":{"score":8.4,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Quanos SCHEMA ST4 on-premises contains a local privilege escalation vulnerability in the Client Update Service due to insecure deserialization in the .NET Remoting service. The service is configured with TypeFilterLevel.Full and is bound to local interfaces only through named pipes. A local authenticated attacker can connect to the local named pipe, obtain the .NET Remoting endpoint, and send specially crafted serialized objects. Successful exploitation results in arbitrary code execution in the context of the update process with NT AUTHORITY\\SYSTEM privileges. Network-only exploitation is not possible and local host access with an authenticated user session is required.","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":"Insecure .NET Remoting deserialization in Quanos SCHEMA ST4 Client Update Service allows local privilege escalation","id":"CVE-2026-11857","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Missing authorization in Quanos SCHEMA ST4 Client Update Service allows arbitrary file overwrite as SYSTEM","id":"CVE-2026-11858"},"packages":[],"prev":{"headline":"cross-origin Digest auth state leak","id":"CVE-2026-11856"},"products":["SCHEMA ST4"],"published":"2026-06-17","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-06-17","vendors":["Quanos Solutions GmbH"]},"summary":"Local attackers can exploit insecure .NET Remoting deserialization in the update service to execute arbitrary code with SYSTEM privileges.","url":"https://insights.sbomify.com/CVE-2026-11857/"}