{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-25674 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-25674 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-25674 is a medium-severity vulnerability in Siemens SIMATIC S7-PLCSIM V5.4, published on 15 Mar 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-2021-25674 and fix it if it is affected.\n\nWhat it is: CVE-2021-25674 is a medium-severity vulnerability in Siemens SIMATIC S7-PLCSIM V5.4, published on 15 Mar 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-2021-25674 in the wild and no public exploit code.\n\nAffected product: Siemens SIMATIC S7-PLCSIM V5.4. 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-2021-25674/ (Markdown: https://insights.sbomify.com/CVE-2021-25674/index.md)","id":"CVE-2021-25674","markdown":"https://insights.sbomify.com/CVE-2021-25674/index.md","name":"CVE-2021-25674","record":{"aliases":["GHSA-jg4g-p5jg-phcr"],"analysis":{"component_type":"desktop_application","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PLC simulation software","requires_auth":"low_privilege","summary":"A local attacker can cause a denial of service in SIMATIC S7-PLCSIM by opening a specially crafted file, triggering a null pointer dereference.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"siemens","cpe":[{"product":"simatic_s7-plcsim","vendor":"siemens"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"A vulnerability has been identified in SIMATIC S7-PLCSIM V5.4 (All versions). An attacker with local access to the system could cause a Denial-of-Service condition in the application when it is used to open a specially crafted file. As a consequence, a NULL pointer deference condition could cause the application to terminate unexpectedly and must be restarted to restore the service.","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":"Null dereference in SIMATIC S7-PLCSIM V5.4","id":"CVE-2021-25674","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in SIMATIC S7-PLCSIM V5.4","id":"CVE-2021-25675"},"packages":[],"prev":{"headline":"Denial of service in SIMATIC S7-PLCSIM V5.4","id":"CVE-2021-25673"},"products":["SIMATIC S7-PLCSIM V5.4"],"published":"2021-03-15","related":[{"cvss_score":5.5,"headline":"Denial of service in SIMATIC S7-PLCSIM V5.4","id":"CVE-2021-25673","kev_date_added":null,"published":"2021-03-15"},{"cvss_score":5.5,"headline":"Denial of service in SIMATIC S7-PLCSIM V5.4","id":"CVE-2021-25675","kev_date_added":null,"published":"2021-03-15"}],"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":["Siemens"]},"summary":"A local attacker can cause a denial of service in SIMATIC S7-PLCSIM by opening a specially crafted file, triggering a null pointer dereference.","url":"https://insights.sbomify.com/CVE-2021-25674/"}