{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37109 exists.","fix":"No fix has been published for CVE-2020-37109 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-37109 is a medium-severity denial of service vulnerability in aSc TimeTables, published on 6 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-37109 and fix it if it is affected.\n\nWhat it is: CVE-2020-37109 is a medium-severity denial of service vulnerability in aSc TimeTables, published on 6 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37109 exists.\n\nAffected product: aSc TimeTables. 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-2020-37109/ (Markdown: https://insights.sbomify.com/CVE-2020-37109/index.md)","id":"CVE-2020-37109","markdown":"https://insights.sbomify.com/CVE-2020-37109/index.md","name":"CVE-2020-37109","record":{"aliases":["GHSA-f2rx-xqg7-mqcx"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"timetable scheduling software","requires_auth":"none","summary":"Attackers can crash the aSc TimeTables application by pasting a large buffer into the Subject title field, causing a denial of service.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.7,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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":"aSc TimeTables 2020.11.4 contains a denial of service vulnerability that allows attackers to crash the application by overwriting the Subject title field with a large buffer. Attackers can generate a 1000-character buffer and paste it into the Subject title to trigger an application crash and potential instability.","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":"aSc TimeTables 2020.11.4 - Denial of Service","id":"CVE-2020-37109","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":"60CycleCMS 2.5.2 - 'news.php' SQL Injection Vulnerability","id":"CVE-2020-37110"},"packages":[],"prev":{"headline":"PhpIX 2012 Professional - 'id' SQL Injection","id":"CVE-2020-37108"},"products":["aSc TimeTables"],"published":"2026-02-06","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":"partial"},"state":"PUBLISHED","updated":"2026-04-07","vendors":["asc Applied Software Consultants"]},"summary":"Attackers can crash the aSc TimeTables application by pasting a large buffer into the Subject title field, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2020-37109/"}