{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-53476 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-53476 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-53476 is a medium-severity denial of service vulnerability in OpenPLC_v3, published on 7 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-53476 and fix it if it is affected.\n\nWhat it is: CVE-2025-53476 is a medium-severity denial of service vulnerability in OpenPLC_v3, published on 7 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-53476 in the wild and no public exploit code.\n\nAffected product: OpenPLC_v3. 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-2025-53476/ (Markdown: https://insights.sbomify.com/CVE-2025-53476/index.md)","id":"CVE-2025-53476","markdown":"https://insights.sbomify.com/CVE-2025-53476/index.md","name":"CVE-2025-53476","record":{"aliases":["GHSA-pm3x-2fvm-pvp8"],"analysis":{"component_type":"ics_ot","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenPLC Modbus server","requires_auth":"none","summary":"An attacker can cause a denial of service in OpenPLC's ModbusTCP server by opening a series of TCP connections, preventing subsequent request processing.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-775","name":"Missing Release of File Descriptor or Handle after Effective Lifetime"}],"description":"A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.","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":"Denial of service in OpenPLC v3","id":"CVE-2025-53476","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Apache Mynewt NimBLE: NULL Pointer Dereference in NimBLE host HCI layer","id":"CVE-2025-53477"},"packages":[],"prev":{"headline":"Advantech iView SQL Injection","id":"CVE-2025-53475"},"products":["OpenPLC_v3"],"published":"2025-10-07","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-11-03","vendors":["OpenPLC"]},"summary":"An attacker can cause a denial of service in OpenPLC's ModbusTCP server by opening a series of TCP connections, preventing subsequent request processing.","url":"https://insights.sbomify.com/CVE-2025-53476/"}