{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-30481 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-30481 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-30481 is a high-severity memory corruption vulnerability in n/a, published on 10 Apr 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-30481 and fix it if it is affected.\n\nWhat it is: CVE-2021-30481 is a high-severity memory corruption vulnerability in n/a, published on 10 Apr 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-30481 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2021-30481/ (Markdown: https://insights.sbomify.com/CVE-2021-30481/index.md)","id":"CVE-2021-30481","markdown":"https://insights.sbomify.com/CVE-2021-30481/index.md","name":"CVE-2021-30481","record":{"aliases":["GHSA-3jx7-82j9-5prx"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Steam client","requires_auth":"low_privilege","summary":"Remote authenticated users can execute arbitrary code via a buffer overflow in Steam invites when a Source engine game is installed.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"steam_client","vendor":"valvesoftware"}],"cvss":{"score":8,"severity":"high","source":"cna","vector":"CVSS:3.1/AC:H/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:R","version":"3.1"},"cwes":[{"id":"CWE-120","name":"Buffer Copy without Checking Size of Input"}],"description":"Valve Steam before 2021-04-17, when a Source engine game is installed, allows remote authenticated users to execute arbitrary code because of a buffer overflow that occurs for a Steam invite after one click.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2021-04-17","github_poc":1,"max_poc_stars":58,"metasploit":0,"nuclei":0,"refs":[{"date":"2021-04-17T01:29:31Z","kind":"github_poc","ref":"https://github.com/floesen/CVE-2021-30481","stars":58,"title":"https://nvd.nist.gov/vuln/detail/CVE-2021-30481"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Memory corruption in n/a","id":"CVE-2021-30481","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"Security feature bypass in n/a","id":"CVE-2021-30482"},"packages":[],"prev":{"headline":"Code injection in n/a","id":"CVE-2021-30480"},"products":["n/a"],"published":"2021-04-10","related":[{"cvss_score":7.8,"headline":"Race condition in n/a","id":"CVE-2020-15530","kev_date_added":null,"published":"2020-07-05"},{"cvss_score":7.8,"headline":"Path traversal in n/a","id":"CVE-2019-17180","kev_date_added":null,"published":"2019-10-04"},{"cvss_score":7.8,"headline":"Privilege escalation in n/a","id":"CVE-2019-15315","kev_date_added":null,"published":"2019-08-21"},{"cvss_score":7.2,"headline":"Privilege escalation in n/a","id":"CVE-2015-7985","kev_date_added":null,"published":"2015-11-24"},{"cvss_score":7,"headline":"Race condition in n/a","id":"CVE-2019-15316","kev_date_added":null,"published":"2019-08-21"},{"cvss_score":6.6,"headline":"Privilege escalation in n/a","id":"CVE-2019-14743","kev_date_added":null,"published":"2019-08-07"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2025-11-03","vendors":["n/a"]},"summary":"Remote authenticated users can execute arbitrary code via a buffer overflow in Steam invites when a Source engine game is installed.","url":"https://insights.sbomify.com/CVE-2021-30481/"}