{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-4818 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-4818 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-4818 is a high-severity vulnerability in PAX Technology A920, published on 15 Jan 2024. 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-2023-4818 and fix it if it is affected.\n\nWhat it is: CVE-2023-4818 is a high-severity vulnerability in PAX Technology A920, published on 15 Jan 2024. 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-2023-4818 in the wild and no public exploit code.\n\nAffected product: PAX Technology A920. 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-2023-4818/ (Markdown: https://insights.sbomify.com/CVE-2023-4818/index.md)","id":"CVE-2023-4818","markdown":"https://insights.sbomify.com/CVE-2023-4818/index.md","name":"CVE-2023-4818","record":{"aliases":["GHSA-hpqw-739g-5cvm"],"analysis":{"component_type":"iot_embedded","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PAX payment terminal","requires_auth":"none","summary":"An attacker with physical USB access can downgrade the bootloader on PAX A920 devices due to a flawed version check, bypassing security controls.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[{"product":"paydroid","vendor":"paxtechnology"}],"cvss":{"score":7.6,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used. \n\nThe attacker must have physical USB access to the device in order to exploit this vulnerability.","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":"Security feature bypass in A920","id":"CVE-2023-4818","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"Shared Files \u003c 1.7.6 - Unauthenticated Stored Cross-Site Scripting","id":"CVE-2023-4819"},"packages":[],"prev":{"headline":"Unrestricted file upload vulnerability in ICP DAS ET-7060","id":"CVE-2023-4817"},"products":["A920"],"published":"2024-01-15","related":[{"cvss_score":7.8,"headline":"Command injection in POS terminals","id":"CVE-2023-42136","kev_date_added":null,"published":"2024-01-15"},{"cvss_score":7.8,"headline":"Path traversal in POS terminals","id":"CVE-2023-42137","kev_date_added":null,"published":"2024-01-15"},{"cvss_score":7.8,"headline":"Command injection in n/a","id":"CVE-2022-26582","kev_date_added":null,"published":"2022-12-16"},{"cvss_score":6.8,"headline":"Code injection in POS terminals","id":"CVE-2023-42134","kev_date_added":null,"published":"2024-01-15"},{"cvss_score":6.8,"headline":"Command injection in A50","id":"CVE-2023-42135","kev_date_added":null,"published":"2024-01-15"},{"cvss_score":6.8,"headline":"Command injection in n/a","id":"CVE-2022-26580","kev_date_added":null,"published":"2022-12-16"}],"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":"2025-06-17","vendors":["PAX Technology"]},"summary":"An attacker with physical USB access can downgrade the bootloader on PAX A920 devices due to a flawed version check, bypassing security controls.","url":"https://insights.sbomify.com/CVE-2023-4818/"}