{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37166 exists.","fix":"No fix has been published for CVE-2020-37166 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-37166 is a medium-severity denial of service vulnerability in Celestial Software AbsoluteTelnet, published on 6 Feb 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-2020-37166 and fix it if it is affected.\n\nWhat it is: CVE-2020-37166 is a medium-severity denial of service vulnerability in Celestial Software AbsoluteTelnet, published on 6 Feb 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-2020-37166 exists.\n\nAffected product: Celestial Software AbsoluteTelnet. 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-2020-37166/ (Markdown: https://insights.sbomify.com/CVE-2020-37166/index.md)","id":"CVE-2020-37166","markdown":"https://insights.sbomify.com/CVE-2020-37166/index.md","name":"CVE-2020-37166","record":{"aliases":["GHSA-vp6j-grx7-8jmx"],"analysis":{"component_type":"desktop_application","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Telnet/SSH client","requires_auth":"none","summary":"Local attackers can crash AbsoluteTelnet by overwriting the SSH2 username field with a large buffer, causing application termination.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"absolutetelnet","vendor":"celestialsoftware"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"AbsoluteTelnet 11.12 contains a denial of service vulnerability in the SSH2 username input field that allows local attackers to crash the application. Attackers can overwrite the username field with a 1000-byte buffer, causing the application to become unresponsive and terminate.","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":"AbsoluteTelnet 11.12 - 'SSH2/username' Denial of Service","id":"CVE-2020-37166","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":3,"next":{"headline":"ClamAV ClamBC \u003c 0.103.0-rc - 'ClamBC' Executable Regular Expression Error","id":"CVE-2020-37167"},"packages":[],"prev":{"headline":"AbsoluteTelnet 11.12 - \"license name\" Denial of Service","id":"CVE-2020-37165"},"products":["AbsoluteTelnet"],"published":"2026-02-06","related":[{"cvss_score":6.7,"headline":"AbsoluteTelnet 11.12 - \"license entry\" Denial of Service","id":"CVE-2020-37164","kev_date_added":null,"published":"2026-02-06"},{"cvss_score":6.7,"headline":"AbsoluteTelnet 11.12 - \"license name\" Denial of Service","id":"CVE-2020-37165","kev_date_added":null,"published":"2026-02-06"},{"cvss_score":6.7,"headline":"AbsoluteTelnet 11.24 - 'Phone' Denial of Service (PoC)","id":"CVE-2021-47764","kev_date_added":null,"published":"2026-01-15"},{"cvss_score":6.7,"headline":"AbsoluteTelnet 11.24 - 'Username' Denial of Service (PoC)","id":"CVE-2021-47765","kev_date_added":null,"published":"2026-01-15"}],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-01","vendors":["Celestial Software"]},"summary":"Local attackers can crash AbsoluteTelnet by overwriting the SSH2 username field with a large buffer, causing application termination.","url":"https://insights.sbomify.com/CVE-2020-37166/"}