{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-32735 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-32735 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-32735 is a high-severity unsafe deserialization vulnerability in Siemens SIMATIC STEP 7 Safety V16, published on 9 Jul 2024. 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-2023-32735 and fix it if it is affected.\n\nWhat it is: CVE-2023-32735 is a high-severity unsafe deserialization vulnerability in Siemens SIMATIC STEP 7 Safety V16, published on 9 Jul 2024. 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-2023-32735 in the wild and no public exploit code.\n\nAffected product: Siemens SIMATIC STEP 7 Safety V16. 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-2023-32735/ (Markdown: https://insights.sbomify.com/CVE-2023-32735/index.md)","id":"CVE-2023-32735","markdown":"https://insights.sbomify.com/CVE-2023-32735/index.md","name":"CVE-2023-32735","record":{"aliases":["GHSA-27hg-xg89-rq4f"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Siemens TIA Portal","requires_auth":"high_privilege","summary":"An attacker can execute arbitrary code by exploiting unsafe .NET BinaryFormatter deserialization in Siemens TIA Portal applications.","user_interaction":"required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[],"cvss":{"score":7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"A vulnerability has been identified in SIMATIC STEP 7 Safety V16 (All versions \u003c V16 Update 7), SIMATIC STEP 7 Safety V17 (All versions \u003c V17 Update 7), SIMATIC STEP 7 Safety V18 (All versions \u003c V18 Update 2), SIMATIC STEP 7 V16 (All versions \u003c V16 Update 7), SIMATIC STEP 7 V17 (All versions \u003c V17 Update 7), SIMATIC STEP 7 V18 (All versions \u003c V18 Update 2), SIMATIC WinCC Unified V16 (All versions \u003c V16 Update 7), SIMATIC WinCC Unified V17 (All versions \u003c V17 Update 7), SIMATIC WinCC Unified V18 (All versions \u003c V18 Update 2), SIMATIC WinCC V16 (All versions \u003c V16.7), SIMATIC WinCC V17 (All versions \u003c V17.7), SIMATIC WinCC V18 (All versions \u003c V18 Update 2), SIMOCODE ES V16 (All versions \u003c V16 Update 7), SIMOCODE ES V17 (All versions \u003c V17 Update 7), SIMOCODE ES V18 (All versions \u003c V18 Update 2), SIMOTION SCOUT TIA V5.4 SP1 (All versions), SIMOTION SCOUT TIA V5.4 SP3 (All versions), SIMOTION SCOUT TIA V5.5 SP1 (All versions), SINAMICS Startdrive V16 (All versions), SINAMICS Startdrive V17 (All versions), SINAMICS Startdrive V18 (All versions), SIRIUS Safety ES V17 (All versions \u003c V17 Update 7), SIRIUS Safety ES V18 (All versions \u003c V18 Update 2), SIRIUS Soft Starter ES V17 (All versions \u003c V17 Update 7), SIRIUS Soft Starter ES V18 (All versions \u003c V18 Update 2), Soft Starter ES V16 (All versions \u003c V16 Update 7), TIA Portal Cloud V3.0 (All versions \u003c V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing hardware configuration profiles. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.\r\n\r\nThis is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.","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":"Deserialization in SIMATIC STEP 7 Safety V16","id":"CVE-2023-32735","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Deserialization in SIMATIC S7-PLCSIM V16","id":"CVE-2023-32736"},"packages":[],"prev":{"headline":"Memory corruption in iOS and iPadOS","id":"CVE-2023-32734"},"products":["SIMATIC STEP 7 Safety V16","SIMATIC STEP 7 Safety V17","SIMATIC STEP 7 Safety V18","SIMATIC STEP 7 V16","SIMATIC STEP 7 V17","SIMATIC STEP 7 V18","SIMATIC WinCC Unified V16","SIMATIC WinCC Unified V17","SIMATIC WinCC Unified V18","SIMATIC WinCC V16","SIMATIC WinCC V17","SIMATIC WinCC V18","SIMOCODE ES V16","SIMOCODE ES V17","SIMOCODE ES V18","SIMOTION SCOUT TIA V5.4 SP1","SIMOTION SCOUT TIA V5.4 SP3","SIMOTION SCOUT TIA V5.5 SP1","SINAMICS Startdrive V16","SINAMICS Startdrive V17","SINAMICS Startdrive V18","SIRIUS Safety ES V17","SIRIUS Safety ES V18","SIRIUS Soft Starter ES V17","SIRIUS Soft Starter ES V18","Soft Starter ES V16","TIA Portal Cloud V3.0"],"published":"2024-07-09","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":"2025-08-27","vendors":["Siemens"]},"summary":"An attacker can execute arbitrary code by exploiting unsafe .NET BinaryFormatter deserialization in Siemens TIA Portal applications.","url":"https://insights.sbomify.com/CVE-2023-32735/"}