{"id":"CVE-2023-50245","aliases":["GHSA-99jg-r3f4-rpxj"],"url":"https://o3.security/vulnerability/CVE-2023-50245","summary":"OpenEXR-viewer memory overflow vulnerability","details":"Just open this exr file through openexr-viewer.\n\n( poc send by email )\n\nThis is windbg log file.\n\n[ POC 2 ]\n(8660.7e44): Access violation - code c0000005 (!!! second chance !!!)\nopenexr_viewer+0x27be4:\n00007ff7`13ff7be4 c744880c0000803f mov     dword ptr [rax+rcx*4+0Ch],3F800000h ds:0000020a`3ac8000c=????????\n\nAttempt to write the value 1.0 to the memory address 0x20A3AC8000C\n\n[ POC 1 ]\n(1404.9264): Access violation - code c0000005 (first chance)\nFirst chance exceptions are reported before any exception handling.\nThis exception may be expected and handled.\nopenexr_viewer+0x27be4:\n00007ff7`13ff7be4 c744880c0000803f mov     dword ptr [rax+rcx*4+0Ch],3F800000h ds:0000029c`b371600c=????????\n\nAttempt to write the value 1.0 to the memory address 0x29CB371600C\n\n\nCredits\nTeam : ZeroPointer\n이동하 ( Lee Dong Ha of ZeroPointer Lab )\n정지민    ( Jeong Jimin of ZeroPointer Lab )\n박우진    ( Park Woojin of ZeroPointer Lab )\n전우진    ( Jeon Woojin of ZeroPointer Lab )\n","published":"2023-12-11T22:39:19.059Z","modified":"2026-08-12T14:51:44.104884Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"GitHub Actions","name":"afichet/openexr-viewer","fixedVersion":"0.6.1"}],"fix":{"url":"https://github.com/afichet/openexr-viewer/commit/d0a7e85dfeb519951fb8a8d70f73f30d41cdd3d9","label":"afichet/openexr-viewer@d0a7e85"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50245.json"},{"type":"ADVISORY","url":"https://github.com/afichet/openexr-viewer/security/advisories/GHSA-99jg-r3f4-rpxj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50245"},{"type":"FIX","url":"https://github.com/afichet/openexr-viewer/commit/d0a7e85dfeb519951fb8a8d70f73f30d41cdd3d9"},{"type":"PACKAGE","url":"https://github.com/afichet/openexr-viewer"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T14:51:44.104884Z"}}