{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-66349 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-66349 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-66349 is a medium-severity memory corruption vulnerability in MZ Automation GmbH libiec61850, published on 30 Jul 2026. 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-2026-66349 and fix it if it is affected.\n\nWhat it is: CVE-2026-66349 is a medium-severity memory corruption vulnerability in MZ Automation GmbH libiec61850, published on 30 Jul 2026. 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-2026-66349 in the wild and no public exploit code.\n\nAffected product: MZ Automation GmbH libiec61850. 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-2026-66349/ (Markdown: https://insights.sbomify.com/CVE-2026-66349/index.md)","id":"CVE-2026-66349","markdown":"https://insights.sbomify.com/CVE-2026-66349/index.md","name":"CVE-2026-66349","record":{"aliases":["GHSA-8m3p-4g59-6h2r"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"IEC 61850 library","requires_auth":"low_privilege","summary":"An attacker can cause a denial of service in the MMS server by sending a malformed BER-encoded request that triggers an out-of-bounds read.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"icscert","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"The MMS server connection handler contains a flaw in its processing of \nBER-encoded request data. When an MMS confirmed request PDU containing \nan extended BER tag is received over an established session, the decoder\n may advance its internal buffer incorrectly due to a missing bounds \ncheck. This results in a one byte heap out-of-bounds read and causes the\n MMS service process to terminate, leading to a denial-of-service \ncondition.","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":"MZ Automation libiec61850 Out-of-bounds Read","id":"CVE-2026-66349","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Doggo vulnerable to cross-site scripting via unescaped date field values","id":"CVE-2026-66353"},"packages":[],"prev":{"headline":"Path traversal in NetKids iMark","id":"CVE-2026-66344"},"products":["libiec61850"],"published":"2026-07-30","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":"2026-07-31","vendors":["MZ Automation GmbH"]},"summary":"An attacker can cause a denial of service in the MMS server by sending a malformed BER-encoded request that triggers an out-of-bounds read.","url":"https://insights.sbomify.com/CVE-2026-66349/"}