{"id":"CVE-2026-129479","kind":"vulnerability","aliases":["CVE-2026-129479"],"related":[],"title":"Assimp: crafted Ogre mesh file crashes applications via integer overflow","description":"Assimp through 6.0.6 contains an integer overflow vulnerability in OgreBinarySerializer::ReadSubMesh that allows attackers to crash applications by supplying crafted Ogre binary .mesh files. Attackers can set a large index count so the 32-bit buffer size wraps, causing a segmentation fault in aiMesh::~aiMesh() during scene teardown.","summary":"Assimp, a library for loading 3D model files, has an integer overflow in its Ogre binary mesh reader. A crafted .mesh file with a large index count wraps a 32-bit buffer size and causes a segmentation fault during scene teardown, crashing the application.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["3d-models","assimp","c++","package"],"not_affected_if":["no-ogre-mesh-loading","trusted-input-only"],"how_to_check":"- Check whether your application links Assimp and which version it uses, for example by searching your dependency manifests or build files for `assimp`.\n- Confirm whether the app loads Ogre `.mesh` files from untrusted sources.","fix":null,"status":"open","published_at":"2026-11-15T14:17:27+00:00","first_seen_at":"2026-11-15T14:36:16+00:00","triaged_at":"2026-11-15T14:37:40+00:00","updated_at":"2026-11-15T14:37:40+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-15T14:37:40Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"unknown","title":"Assimp: crafted Ogre mesh file crashes applications via integer overflow","impact":"low","summary":"Assimp, a library for loading 3D model files, has an integer overflow in its Ogre binary mesh reader. A crafted .mesh file with a large index count wraps a 32-bit buffer size and causes a segmentation fault during scene teardown, crashing the application.","audience":"developers","category":"package","nicknames":[],"who_cares":["assimp","3d-models","c++"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"application crashes when parsing a crafted mesh file","analyst_note":"Confirm the fixed version after 6.0.6 and whether the NVD record lists product ranges; check the VulnCheck advisory for the fix.","how_to_check":"- Check whether your application links Assimp and which version it uses, for example by searching your dependency manifests or build files for `assimp`.\n- Confirm whether the app loads Ogre `.mesh` files from untrusted sources.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-ogre-mesh-loading","trusted-input-only"],"who_is_affected":"Applications that embed Assimp through version 6.0.6 and load Ogre binary .mesh files, especially from untrusted sources such as user uploads or downloads. The sources describe a crash (denial of service), not code execution. Applications that never parse Ogre mesh files can likely skip it.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000743,"input_tokens":4616,"output_tokens":563,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-129479':13A,16A '-2026':12A,15A '32':52B,100C '3d':18B,28B '3d-models':17B '6.0.6':69C 'aimesh':110C,111C 'allow':79C 'applic':7A,66B,83C 'assimp':1A,20B,23B,67C 'attack':80C,91C 'binari':38B,88C 'bit':53B,101C 'buffer':54B,102C 'c':21B 'caus':57B,105C 'contain':70C 'count':49B,97C 'craft':2A,42B,86C 'crash':6A,64B,82C 'cve':11A,14A 'fault':60B,108C 'file':5A,30B,44B,90C 'index':48B,96C 'integ':9A,33B,72C 'larg':47B,95C 'librari':25B 'load':27B 'mesh':4A,39B,43B,89C 'model':19B,29B 'ogr':3A,37B,87C 'ogrebinaryseri':76C 'overflow':10A,34B,73C 'packag':22B 'reader':40B 'readsubmesh':77C 'scene':62B,113C 'segment':59B,107C 'set':93C 'size':55B,103C 'suppli':85C 'teardown':63B,114C 'via':8A 'vulner':74C 'wrap':50B,104C","nicknames":[],"mitigations":[],"who_affected":"Applications that embed Assimp through version 6.0.6 and load Ogre binary .mesh files, especially from untrusted sources such as user uploads or downloads. The sources describe a crash (denial of service), not code execution. Applications that never parse Ogre mesh files can likely skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["3dmodels","assimp","c","medium","package"],"campaign_type":null,"search_a":"'-129479':13A,16A '-2026':12A,15A 'applic':7A 'assimp':1A 'craft':2A 'crash':6A 'cve':11A,14A 'file':5A 'integ':9A 'mesh':4A 'ogr':3A 'overflow':10A 'via':8A","search_b":"'32':52B '3d':18B,28B '3d-models':17B 'applic':66B 'assimp':20B,23B 'binari':38B 'bit':53B 'buffer':54B 'c':21B 'caus':57B 'count':49B 'craft':42B 'crash':64B 'fault':60B 'file':30B,44B 'index':48B 'integ':33B 'larg':47B 'librari':25B 'load':27B 'mesh':39B,43B 'model':19B,29B 'ogr':37B 'overflow':34B 'packag':22B 'reader':40B 'scene':62B 'segment':59B 'size':55B 'teardown':63B 'wrap':50B","search_c":"'32':100C '6.0.6':69C 'aimesh':110C,111C 'allow':79C 'applic':83C 'assimp':67C 'attack':80C,91C 'binari':88C 'bit':101C 'buffer':102C 'caus':105C 'contain':70C 'count':97C 'craft':86C 'crash':82C 'fault':108C 'file':90C 'index':96C 'integ':72C 'larg':95C 'mesh':89C 'ogr':87C 'ogrebinaryseri':76C 'overflow':73C 'readsubmesh':77C 'scene':113C 'segment':107C 'set':93C 'size':103C 'suppli':85C 'teardown':114C 'vulner':74C 'wrap':104C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-15T14:17:27+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-129479","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-129479","severity":null,"published_at":"2026-11-15T14:17:27+00:00","modified_at":"2026-11-15T14:17:27+00:00","first_seen_at":"2026-11-15T14:36:16+00:00","fetched_at":"2026-11-15T14:36:16+00:00","note":null}],"documents":[{"id":163818,"url":"https://www.vulncheck.com/advisories/assimp-through-6.0.6-integer-overflow-via-ogrebinaryserializer-readsubmesh","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}