{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-55944 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-55944 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-55944 is a critical unsafe deserialization vulnerability in Microsoft Dynamics NAV 2018, published on 14 Jul 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-2026-55944 and fix it if it is affected.\n\nWhat it is: CVE-2026-55944 is a critical unsafe deserialization vulnerability in Microsoft Dynamics NAV 2018, published on 14 Jul 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-2026-55944 in the wild and no public exploit code.\n\nAffected product: Microsoft Dynamics NAV 2018. 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-2026-55944/ (Markdown: https://insights.sbomify.com/CVE-2026-55944/index.md)","id":"CVE-2026-55944","markdown":"https://insights.sbomify.com/CVE-2026-55944/index.md","name":"CVE-2026-55944","record":{"aliases":["GHSA-rvmx-r962-429w"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Business Central ERP","requires_auth":"none","summary":"An unauthorized attacker can execute arbitrary code remotely by exploiting a deserialization flaw in Microsoft Dynamics NAV and Business Central.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"dynamics_nav","vendor":"microsoft"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Deserialization of untrusted data in Microsoft Dynamics NAV allows an unauthorized attacker to execute code over a network.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-10-27","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-10-27T02:34:06Z","kind":"github_poc","ref":"https://github.com/kipkorirchirchir800-hash/Cve-2026-55944","stars":0,"title":"This PoC simulates an XML parsing vulnerability where configuration data is parsed and passed directly to ProcessStartInfo. It extracts executable paths and arguments from XML markup to spawn a system process, demonstrating how unsafe input handling can lead to arbitrary command execution."}],"tier":"poc_unverified"},"has_fix":null,"headline":"Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Code Execution Vulnerability","id":"CVE-2026-55944","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Microsoft Edge (Chromium-based) Information Disclosure Vulnerability","id":"CVE-2026-55945"},"packages":[],"prev":{"headline":"Microsoft Excel Remote Code Execution Vulnerability","id":"CVE-2026-55899"},"products":["Microsoft Dynamics NAV 2018"],"published":"2026-07-14","related":[{"cvss_score":6.5,"headline":"Microsoft Dynamics Business Central/NAV Information Disclosure Vulnerability","id":"CVE-2020-17133","kev_date_added":null,"published":"2020-12-09"},{"cvss_score":5.4,"headline":"Cross-site scripting in Microsoft Dynamics NAV","id":"CVE-2018-8651","kev_date_added":null,"published":"2018-12-12"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-28","vendors":["Microsoft"]},"summary":"An unauthorized attacker can execute arbitrary code remotely by exploiting a deserialization flaw in Microsoft Dynamics NAV and Business Central.","url":"https://insights.sbomify.com/CVE-2026-55944/"}