{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20047 exists.","fix":"No fix has been published for CVE-2016-20047 yet. Limit exposure of the affected software until one is available.","what":"CVE-2016-20047 is a high-severity memory corruption vulnerability in EKG Gadu, published on 28 Mar 2026. 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-2016-20047 and fix it if it is affected.\n\nWhat it is: CVE-2016-20047 is a high-severity memory corruption vulnerability in EKG Gadu, published on 28 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20047 exists.\n\nAffected product: EKG Gadu. 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-2016-20047/ (Markdown: https://insights.sbomify.com/CVE-2016-20047/index.md)","id":"CVE-2016-20047","markdown":"https://insights.sbomify.com/CVE-2016-20047/index.md","name":"CVE-2016-20047","record":{"aliases":["GHSA-v8g9-6wqg-f384"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"EKG Gadu client","requires_auth":"none","summary":"Local attackers can execute arbitrary code by supplying an oversized username string to trigger a buffer overflow in EKG Gadu.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:L/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":"EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by passing a crafted buffer exceeding 258 bytes to overwrite the instruction pointer and execute shellcode with user privileges.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"EKG Gadu 1.9 Local Buffer Overflow via Username Parameter","id":"CVE-2016-20047","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2016"},"n_packages":0,"n_references":3,"next":{"headline":"iSelect 1.4.0-2+b1 Local Buffer Overflow via key parameter","id":"CVE-2016-20048"},"packages":[],"prev":{"headline":"zFTP Client 20061220+dfsg3-4.1 Local Buffer Overflow","id":"CVE-2016-20046"},"products":["EKG Gadu"],"published":"2026-03-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-03-30","vendors":["ekg"]},"summary":"Local attackers can execute arbitrary code by supplying an oversized username string to trigger a buffer overflow in EKG Gadu.","url":"https://insights.sbomify.com/CVE-2016-20047/"}