{"id":"CVE-2017-1000172","aliases":["EUVD-2017-1454","GHSA-9h29-g2j9-rh36"],"status":"published","title":"Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use...","description":"Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use-After-Free after the 'sublexer' pointer has been freed. Line 542 of gravity_lexer.c. 'lexer' is being used to access a variable but 'lexer' has already been freed, creating a Heap Use-After-Free condition.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.02437,"percentile":0.84518,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2017-11-17T03:00:00Z","modified":"2026-06-17T00:58:51Z","products":[{"vendor":"creolabs","product":"gravity"}],"references":[{"url":"https://github.com/marcobambini/gravity/issues/144","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-1000172"},{"url":"https://github.com/advisories/GHSA-9h29-g2j9-rh36"}],"sources":{"cve":[{"id":"CVE-2017-1000172","description":"Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use-After-Free after the 'sublexer' pointer has been freed. Line 542 of gravity_lexer.c. 'lexer' is being used to access a variable but 'lexer' has already been freed, creating a Heap Use-After-Free condition.","status":"published","published":"2017-11-17T03:00:00Z","modified":"2024-09-16T20:17:10.822Z","updated_at":"2026-11-02T14:33:21.142987Z"}],"euvd":[{"id":"EUVD-2017-1454","description":"Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use-After-Free after the 'sublexer' pointer has been freed. Line 542 of gravity_lexer.c. 'lexer' is being used to access a variable but 'lexer' has already been freed, creating a Heap Use-After-Free condition.","status":"published","published":"2017-11-17T03:00:00Z","modified":"2024-09-16T20:17:10Z","updated_at":"2026-11-03T00:55:15.468069Z"}],"ghsa":[{"id":"GHSA-9h29-g2j9-rh36","title":"Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use...","description":"Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use-After-Free after the 'sublexer' pointer has been freed. Line 542 of gravity_lexer.c. 'lexer' is being used to access a variable but 'lexer' has already been freed, creating a Heap Use-After-Free condition.","status":"published","published":"2022-05-17T00:19:55Z","modified":"2023-02-03T05:01:23Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:52:58.20473Z"}],"nvd":[{"id":"CVE-2017-1000172","description":"Creolabs Gravity Version: 1.0 Use-After-Free Possible code execution. An example of a Heap-Use-After-Free after the 'sublexer' pointer has been freed. Line 542 of gravity_lexer.c. 'lexer' is being used to access a variable but 'lexer' has already been freed, creating a Heap Use-After-Free condition.","status":"published","published":"2017-11-17T03:29:00.19Z","modified":"2026-06-17T00:58:51.743Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:04:08.635428Z"}]}}