{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-27395 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-27395 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-27395 is a critical memory corruption vulnerability in SoftEther VPN, published on 12 Oct 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-2023-27395 and fix it if it is affected.\n\nWhat it is: CVE-2023-27395 is a critical memory corruption vulnerability in SoftEther VPN, published on 12 Oct 2023. 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-2023-27395 in the wild and no public exploit code.\n\nAffected product: SoftEther VPN. 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-2023-27395/ (Markdown: https://insights.sbomify.com/CVE-2023-27395/index.md)","id":"CVE-2023-27395","markdown":"https://insights.sbomify.com/CVE-2023-27395/index.md","name":"CVE-2023-27395","record":{"aliases":["GHSA-33mh-qwc8-jxxx"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"VPN server software","requires_auth":"none","summary":"A heap-based buffer overflow in SoftEther VPN allows arbitrary code execution via a crafted packet during a man-in-the-middle attack.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"talos","cpe":[{"product":"vpn","vendor":"softether"}],"cvss":{"score":9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"A heap-based buffer overflow vulnerability exists in the vpnserver WpcParsePacket() functionality of SoftEther VPN 4.41-9782-beta, 5.01.9674 and 5.02. A specially crafted network packet can lead to arbitrary code execution. An attacker can perform a man-in-the-middle attack to trigger 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":"Memory corruption in SoftEther VPN","id":"CVE-2023-27395","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"Missing authorization in Multiple OMRON products which implement FINS protocol","id":"CVE-2023-27396"},"packages":[],"prev":{"headline":"CVE-2023-27394","id":"CVE-2023-27394"},"products":["SoftEther VPN"],"published":"2023-10-12","related":[{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-25565","kev_date_added":null,"published":"2025-03-12"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2025-25567","kev_date_added":null,"published":"2025-03-12"},{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2025-25568","kev_date_added":null,"published":"2025-03-12"},{"cvss_score":7.8,"headline":"Auth bypass in SoftEther VPN","id":"CVE-2023-32634","kev_date_added":null,"published":"2023-10-12"},{"cvss_score":7.5,"headline":"Integer overflow in SoftEther VPN","id":"CVE-2023-22308","kev_date_added":null,"published":"2023-10-12"},{"cvss_score":7.5,"headline":"Denial of service in SoftEther VPN","id":"CVE-2023-23581","kev_date_added":null,"published":"2023-10-12"}],"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)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2024-08-02","vendors":["SoftEther VPN"]},"summary":"A heap-based buffer overflow in SoftEther VPN allows arbitrary code execution via a crafted packet during a man-in-the-middle attack.","url":"https://insights.sbomify.com/CVE-2023-27395/"}