{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2016-8858 in the wild and no public exploit code.","fix":"No fix published yet.","what":"CVE-2016-8858 is a high-severity denial of service vulnerability in OpenSSH, published on 9 Dec 2016. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2016-8858 and fix it if it is affected.\n\nWhat it is: CVE-2016-8858 is a high-severity denial of service vulnerability in OpenSSH, published on 9 Dec 2016. 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-2016-8858 in the wild and no public exploit code.\n\nAffected product: OpenSSH. 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-2016-8858/ (Markdown: https://insights.sbomify.com/CVE-2016-8858/index.md)","id":"CVE-2016-8858","markdown":"https://insights.sbomify.com/CVE-2016-8858/index.md","name":"CVE-2016-8858","record":{"aliases":["DEBIAN-CVE-2016-8858","GHSA-cfx4-r6f2-m2mc","UBUNTU-CVE-2016-8858"],"analysis":{"component_type":"server_software","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenSSH server","requires_auth":"none","summary":"Remote attackers can cause denial of service via memory consumption by sending duplicate KEXINIT requests to OpenSSH servers.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"openssh","vendor":"openbsd"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-399","name":null},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests.  NOTE: a third party reports that \"OpenSSH upstream does not consider this as a security issue.\"","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2016-11-03","github_poc":1,"max_poc_stars":7,"metasploit":0,"nuclei":0,"refs":[{"date":"2016-11-03T16:10:47Z","kind":"github_poc","ref":"https://github.com/dag-erling/kexkill","stars":7,"title":"Proof of concept for CVE-2016-8858"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Denial of service in n/a","id":"CVE-2016-8858","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"openbsd:openssh","products":["openbsd:openssh"],"type":"denial_of_service","year":"2016"},"n_packages":0,"n_references":13,"next":{"headline":"Integer overflow in n/a","id":"CVE-2016-8859"},"packages":[],"prev":{"headline":"Misconfiguration in n/a","id":"CVE-2016-8856"},"products":["n/a"],"published":"2016-12-09","related":[{"cvss_score":10,"headline":"Auth bypass in n/a","id":"CVE-2003-0786","kev_date_added":null,"published":"2003-09-25"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2003-0693","kev_date_added":null,"published":"2003-09-17"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2002-0640","kev_date_added":null,"published":"2003-04-02"},{"cvss_score":10,"headline":"Integer overflow in n/a","id":"CVE-2001-0144","kev_date_added":null,"published":"2001-05-07"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2000-0999","kev_date_added":null,"published":"2000-11-29"},{"cvss_score":10,"headline":"Privilege escalation in n/a","id":"CVE-2000-0525","kev_date_added":null,"published":"2000-10-13"},{"cvss_score":9.8,"headline":"Auth bypass in n/a","id":"CVE-2010-4478","kev_date_added":null,"published":"2010-12-06"}],"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":"partial"},"state":"PUBLISHED","updated":"2026-05-29","vendors":["n/a"]},"summary":"Remote attackers can cause denial of service via memory consumption by sending duplicate KEXINIT requests to OpenSSH servers.","url":"https://insights.sbomify.com/CVE-2016-8858/"}