{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-8531 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-8531 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-8531 is a medium-severity vulnerability in Mitsubishi Electric Corporation MELSEC-Q Series Q03UDVCPU, published on 19 Sep 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-2025-8531 and fix it if it is affected.\n\nWhat it is: CVE-2025-8531 is a medium-severity vulnerability in Mitsubishi Electric Corporation MELSEC-Q Series Q03UDVCPU, published on 19 Sep 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-2025-8531 in the wild and no public exploit code.\n\nAffected product: Mitsubishi Electric Corporation MELSEC-Q Series Q03UDVCPU. 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-2025-8531/ (Markdown: https://insights.sbomify.com/CVE-2025-8531/index.md)","id":"CVE-2025-8531","markdown":"https://insights.sbomify.com/CVE-2025-8531/index.md","name":"CVE-2025-8531","record":{"aliases":["GHSA-r7hp-8xqq-gfpr"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Mitsubishi PLC","requires_auth":"none","summary":"Remote attackers can cause denial of service in Mitsubishi MELSEC-Q PLCs via integer underflow when user authentication is enabled.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Mitsubishi","cpe":[],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-130","name":"Improper Handling of Length Parameter Inconsistency"}],"description":"Improper Handling of Length Parameter Inconsistency vulnerability in Mitsubishi Electric Corporation MELSEC-Q Series Q03UDVCPU, Q04UDVCPU, Q06UDVCPU, Q13UDVCPU, Q26UDVCPU, Q04UDPVCPU, Q06UDPVCPU, Q13UDPVCPU, and Q26UDPVCPU with the first 5 digits of serial No. \"24082\" to \"27081\" allows a remote attacker to cause an integer underflow by sending specially crafted packets to the affected product to stop Ethernet communication and the execution of control programs on the product, when the user authentication function is enabled. The user authentication function is enabled by default only when settings are configured by GX Works2, which complies with the Cybersecurity Law of the People's Republic of China, and is normally disabled.","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":"Integer overflow in MELSEC-Q Series Q03UDVCPU","id":"CVE-2025-8531","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2025"},"n_packages":0,"n_references":3,"next":{"headline":"IDOR in Bimser's eBA Document and Workflow Management System","id":"CVE-2025-8532"},"packages":[],"prev":{"headline":"elunez eladmin Druid application-prod.yml default credentials","id":"CVE-2025-8530"},"products":["MELSEC-Q Series Q03UDVCPU","MELSEC-Q Series Q04UDPVCPU","MELSEC-Q Series Q04UDVCPU","MELSEC-Q Series Q06UDPVCPU","MELSEC-Q Series Q06UDVCPU","MELSEC-Q Series Q13UDPVCPU","MELSEC-Q Series Q13UDVCPU","MELSEC-Q Series Q26UDPVCPU","MELSEC-Q Series Q26UDVCPU"],"published":"2025-09-19","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":"partial"},"state":"PUBLISHED","updated":"2025-09-24","vendors":["Mitsubishi Electric Corporation"]},"summary":"Remote attackers can cause denial of service in Mitsubishi MELSEC-Q PLCs via integer underflow when user authentication is enabled.","url":"https://insights.sbomify.com/CVE-2025-8531/"}