{"answers":{"affected":"It affects 23 products.","exploited":"Yes. Attackers have exploited CVE-2023-33009 in the wild since at least 5 Jun 2023.","fix":"No fix has been published for CVE-2023-33009 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 26 Jun 2023.","what":"CVE-2023-33009 is a critical memory corruption vulnerability in Zyxel ATP series firmware, published on 24 May 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-2023-33009 and fix it if it is affected.\n\nWhat it is: CVE-2023-33009 is a critical memory corruption vulnerability in Zyxel ATP series firmware, published on 24 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2023-33009 in the wild since at least 5 Jun 2023.\n\nAffected product: Zyxel ATP series firmware. 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-2023-33009/ (Markdown: https://insights.sbomify.com/CVE-2023-33009/index.md)","id":"CVE-2023-33009","markdown":"https://insights.sbomify.com/CVE-2023-33009/index.md","name":"CVE-2023-33009","record":{"aliases":["GHSA-g3f9-6h7x-x69v"],"analysis":{"component_type":"network_device","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Zyxel firewall firmware","requires_auth":"none","summary":"Unauthenticated attackers can trigger a buffer overflow in Zyxel firewall firmware, leading to remote code execution or denial of service.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zyxel","cpe":[{"product":"atp100_firmware","vendor":"zyxel"},{"product":"atp100w_firmware","vendor":"zyxel"},{"product":"atp200_firmware","vendor":"zyxel"},{"product":"atp500_firmware","vendor":"zyxel"},{"product":"atp700_firmware","vendor":"zyxel"},{"product":"atp800_firmware","vendor":"zyxel"},{"product":"usg20-vpn_firmware","vendor":"zyxel"},{"product":"usg_20w-vpn_firmware","vendor":"zyxel"},{"product":"usg_40_firmware","vendor":"zyxel"},{"product":"usg_40w_firmware","vendor":"zyxel"},{"product":"usg_60_firmware","vendor":"zyxel"},{"product":"usg_60w_firmware","vendor":"zyxel"},{"product":"usg_flex_100_firmware","vendor":"zyxel"},{"product":"usg_flex_100w_firmware","vendor":"zyxel"},{"product":"usg_flex_200_firmware","vendor":"zyxel"},{"product":"usg_flex_500_firmware","vendor":"zyxel"},{"product":"usg_flex_50_firmware","vendor":"zyxel"},{"product":"usg_flex_50w_firmware","vendor":"zyxel"},{"product":"usg_flex_700_firmware","vendor":"zyxel"},{"product":"vpn1000_firmware","vendor":"zyxel"},{"product":"vpn100_firmware","vendor":"zyxel"},{"product":"vpn300_firmware","vendor":"zyxel"},{"product":"vpn50_firmware","vendor":"zyxel"}],"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","version":"3.1"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"A buffer overflow vulnerability in the notification function in Zyxel ATP series firmware versions 4.60 through 5.36 Patch 1, USG FLEX series firmware versions 4.60 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.60 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.60 through 5.36 Patch 1, VPN series firmware versions 4.60 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.60 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"exploited"},"has_fix":null,"headline":"Zyxel Multiple Firewalls Buffer Overflow","id":"CVE-2023-33009","indexable":true,"kev":{"dateAdded":"2023-06-05","dueDate":"2023-06-26","knownRansomwareCampaignUse":"Unknown","product":"Multiple Firewalls","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Zyxel","vulnerabilityName":"Zyxel Multiple Firewalls Buffer Overflow Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Zyxel Multiple Firewalls Buffer Overflow","id":"CVE-2023-33010"},"packages":[],"prev":{"headline":"Apache Johnzon: Prevent inefficient internal conversion from BigDecimal at large scale","id":"CVE-2023-33008"},"products":["ATP series firmware","USG FLEX 50(W) firmware","USG FLEX series firmware","USG20(W)-VPN firmware","VPN series firmware","ZyWALL/USG series firmware"],"published":"2023-05-24","related":[{"cvss_score":9.8,"headline":"Zyxel Multiple Firewalls Buffer Overflow","id":"CVE-2023-33010","kev_date_added":"2023-06-05","published":"2023-05-24"},{"cvss_score":9.8,"headline":"Zyxel Multiple Firewalls OS Command Injection","id":"CVE-2023-28771","kev_date_added":"2023-05-31","published":"2023-04-25"},{"cvss_score":9.8,"headline":"Zyxel Multiple Firewalls OS Command Injection","id":"CVE-2022-30525","kev_date_added":"2022-05-16","published":"2022-05-12"},{"cvss_score":9.8,"headline":"Zyxel Multiple Products Use of Hard-Coded Credentials","id":"CVE-2020-29583","kev_date_added":"2021-11-03","published":"2020-12-22"},{"cvss_score":9.8,"headline":"Zyxel Multiple NAS Devices OS Command Injection","id":"CVE-2020-9054","kev_date_added":"2022-03-25","published":"2020-03-04"},{"cvss_score":9.8,"headline":"Auth bypass in ATP series firmware","id":"CVE-2022-0342","kev_date_added":null,"published":"2022-03-28"}],"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":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["Zyxel"]},"summary":"Unauthenticated attackers can trigger a buffer overflow in Zyxel firewall firmware, leading to remote code execution or denial of service.","url":"https://insights.sbomify.com/CVE-2023-33009/"}