{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-85440 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-85440 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-85440 is a critical memory corruption vulnerability in themoos core-moos, published on 3 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-85440 and fix it if it is affected.\n\nWhat it is: CVE-2026-85440 is a critical memory corruption vulnerability in themoos core-moos, published on 3 Sep 2026. 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-2026-85440 in the wild and no public exploit code.\n\nAffected product: themoos core-moos. 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-2026-85440/ (Markdown: https://insights.sbomify.com/CVE-2026-85440/index.md)","id":"CVE-2026-85440","markdown":"https://insights.sbomify.com/CVE-2026-85440/index.md","name":"CVE-2026-85440","record":{"aliases":["GHSA-m984-rrgf-rcwh"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"MOOS middleware library","requires_auth":"none","summary":"Remote attackers can achieve arbitrary code execution via a pre-authentication heap overflow in MOOSDB caused by improper handling of negative packet lengths.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"core-moos","vendor":"themoos"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"MOOS core-moos through 10.4.0 contains a pre-authentication heap overflow vulnerability in MOOSCommPkt packet handling that allows remote attackers to write arbitrary data by declaring a negative packet length. Attackers can exploit the signed integer check in InflateTo() and negative size conversion in recv() to overflow a four-byte heap buffer during the HandShake phase before authentication.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"MOOS core-moos through 10.4.0 MOOSDB Pre-Authentication Heap Overflow via Negative Packet Length","id":"CVE-2026-85440","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Negative Serialized String Length","id":"CVE-2026-85441"},"packages":[],"prev":{"headline":"MOOS-IvP through 24.8.1 alogsplit Command Injection via Input Pathname","id":"CVE-2026-85439"},"products":["core-moos"],"published":"2026-09-03","related":[{"cvss_score":9.3,"headline":"MOOS core-moos through 10.4.0 Missing Authentication for MOOSDB Publish, Subscribe and DB_CLEAR","id":"CVE-2026-85424","kev_date_added":null,"published":"2026-09-03"},{"cvss_score":9.3,"headline":"MOOS core-moos through 10.4.0 MOOSDB HTTP Server Unauthenticated Variable Write","id":"CVE-2026-85428","kev_date_added":null,"published":"2026-09-03"},{"cvss_score":8.8,"headline":"MOOS core-moos through 10.4.0 MOOSDB Message Source Spoofing via Wire Identity","id":"CVE-2026-85432","kev_date_added":null,"published":"2026-09-03"},{"cvss_score":8.8,"headline":"MOOS core-moos through 10.4.0 MOOSDB Out-of-Bounds Read via Short Packet","id":"CVE-2026-85455","kev_date_added":null,"published":"2026-09-03"},{"cvss_score":8.7,"headline":"MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Negative Serialized String Length","id":"CVE-2026-85441","kev_date_added":null,"published":"2026-09-03"},{"cvss_score":8.7,"headline":"MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Unbounded Packet Allocation","id":"CVE-2026-85442","kev_date_added":null,"published":"2026-09-03"}],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-04","vendors":["themoos"]},"summary":"Remote attackers can achieve arbitrary code execution via a pre-authentication heap overflow in MOOSDB caused by improper handling of negative packet lengths.","url":"https://insights.sbomify.com/CVE-2026-85440/"}