{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-0027 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-0027 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-0027 is a medium-severity vulnerability in Rockwell Automation Modbus TCP Server Add On Instructions, published on 17 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-0027 and fix it if it is affected.\n\nWhat it is: CVE-2023-0027 is a medium-severity vulnerability in Rockwell Automation Modbus TCP Server Add On Instructions, published on 17 Mar 2023. 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-2023-0027 in the wild and no public exploit code.\n\nAffected product: Rockwell Automation Modbus TCP Server Add On Instructions. 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-2023-0027/ (Markdown: https://insights.sbomify.com/CVE-2023-0027/index.md)","id":"CVE-2023-0027","markdown":"https://insights.sbomify.com/CVE-2023-0027/index.md","name":"CVE-2023-0027","record":{"aliases":["GHSA-fj78-7vc8-pxrm"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Modbus TCP Server AOI","requires_auth":"none","summary":"An unauthorized user can send a malformed message to leak sensitive Modbus TCP Server AOI information from the connected device.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Rockwell","cpe":[{"product":"modbus_tcp_server_add_on_instructions","vendor":"rockwellautomation"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Rockwell Automation Modbus TCP Server AOI prior to 2.04.00 is vulnerable to an unauthorized user sending a malformed message that could cause the controller to respond with a copy of the most recent response to the last valid request. If exploited, an unauthorized user could read the connected device’s Modbus TCP Server AOI information.","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":"Rockwell Automation Modbus TCP AOI Server Could Leak Sensitive Information","id":"CVE-2023-0027","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-site Scripting (XSS) - Stored in linagora/twake","id":"CVE-2023-0028"},"packages":[],"prev":{"headline":"Denial of service in Junos OS","id":"CVE-2023-0026"},"products":["Modbus TCP Server Add On Instructions"],"published":"2023-03-17","related":[],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-26","vendors":["Rockwell Automation"]},"summary":"An unauthorized user can send a malformed message to leak sensitive Modbus TCP Server AOI information from the connected device.","url":"https://insights.sbomify.com/CVE-2023-0027/"}