{"id":"CVE-2021-39538","aliases":["EUVD-2021-25895","GHSA-878w-3c3r-w7j4"],"status":"published","title":"An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the...","description":"An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function node::ObjNode::Value() located in objnode.cpp. It allows an attacker to cause Denial of Service.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00635,"percentile":0.50919,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2021-09-20T15:26:59Z","modified":"2026-06-17T04:03:46Z","products":[{"vendor":"pdftools_project","product":"pdftools"}],"references":[{"url":"https://github.com/leonhad/pdftools/issues/4","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39538"},{"url":"https://github.com/advisories/GHSA-878w-3c3r-w7j4"}],"sources":{"cve":[{"id":"CVE-2021-39538","description":"An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function node::ObjNode::Value() located in objnode.cpp. It allows an attacker to cause Denial of Service.","status":"published","published":"2021-09-20T15:26:59Z","modified":"2024-08-04T02:06:42.625Z","updated_at":"2026-11-02T14:33:09.175141Z"}],"euvd":[{"id":"EUVD-2021-25895","description":"An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function node::ObjNode::Value() located in objnode.cpp. It allows an attacker to cause Denial of Service.","status":"published","published":"2021-09-20T15:26:59Z","modified":"2024-08-04T02:06:42Z","updated_at":"2026-11-03T03:24:23.166742Z"}],"ghsa":[{"id":"GHSA-878w-3c3r-w7j4","title":"An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the...","description":"An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function node::ObjNode::Value() located in objnode.cpp. It allows an attacker to cause Denial of Service.","status":"published","published":"2022-05-24T19:15:09Z","modified":"2023-01-30T05:02:10Z","cwes":["CWE-476"],"updated_at":"2026-11-02T14:46:34.725436Z"}],"nvd":[{"id":"CVE-2021-39538","description":"An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function node::ObjNode::Value() located in objnode.cpp. It allows an attacker to cause Denial of Service.","status":"published","published":"2021-09-20T16:15:12.52Z","modified":"2026-06-17T04:03:46.86Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:06:58.933037Z"}]}}