{"id":"CVE-2026-119719","state":"PUBLISHED","title":"Blender before 4.5.15 and 5.x before 5.2.3 Heap Buffer Overflow via Thumbnail Extraction","description":"Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution.","publishedAt":"2026-10-30T15:16:16.337Z","updatedAt":"2026-10-30T15:16:16.337Z","severity":{"score":8.5,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Blender Foundation Blender"],"affected":[{"vendor":"Blender Foundation","product":"Blender","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.5.15","versionType":"semver"},{"version":"5.0.0","status":"affected","lessThan":"5.2.3","versionType":"semver"}],"repo":"https://projects.blender.org/blender/blender"}],"references":["https://projects.blender.org/blender/blender/pulls/164279","https://projects.blender.org/blender/blender/commit/d723c68112d216099c9b24dab5c8440bab7add08","https://projects.blender.org/blender/blender/commit/71c10a0217d5e331b215b76773ad23b64974bd97","https://projects.blender.org/blender/blender","https://www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-heap-buffer-overflow-via-thumbnail-extraction"],"weaknesses":["CWE-190"],"ingestedAt":"2026-10-30T15:28:07.787Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/119xxx/CVE-2026-119719.json","commit":"2dd2c702f7243e3dc10f8d67fb014c71366252bc","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-119719","state":"PUBLISHED","datePublished":"2026-10-30T15:16:16.337Z","dateUpdated":"2026-10-30T15:16:16.337Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-30T14:49:28.319Z"},"containers":{"cna":{"title":"Blender before 4.5.15 and 5.x before 5.2.3 Heap Buffer Overflow via Thumbnail Extraction","descriptions":[{"lang":"en","value":"Blender before 4.5.15 and 5.x before 5.2.3 contains a heap buffer overflow vulnerability in the blend file thumbnail extractor caused by 32-bit integer overflow in thumb_data_vertical_flip(). Attackers can craft a .blend file with malicious TEST block dimensions that trigger an out-of-bounds write when blender-thumbnailer or the Windows shell extension previews it, causing crashes or code execution."}],"affected":[{"vendor":"Blender Foundation","product":"Blender","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.5.15","versionType":"semver"},{"version":"5.0.0","status":"affected","lessThan":"5.2.3","versionType":"semver"}],"repo":"https://projects.blender.org/blender/blender"}],"references":[{"url":"https://projects.blender.org/blender/blender/pulls/164279","tags":["patch"]},{"url":"https://projects.blender.org/blender/blender/commit/d723c68112d216099c9b24dab5c8440bab7add08","tags":["patch"]},{"url":"https://projects.blender.org/blender/blender/commit/71c10a0217d5e331b215b76773ad23b64974bd97","tags":["patch"]},{"url":"https://projects.blender.org/blender/blender","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/blender-before-4.5.15-and-5-x-before-5.2.3-heap-buffer-overflow-via-thumbnail-extraction","name":"VulnCheck Advisory: Blender before 4.5.15 and 5.x before 5.2.3 Heap Buffer Overflow via Thumbnail Extraction","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-190","lang":"en","description":"Integer Overflow or Wraparound","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-30T15:16:16.337Z"},"datePublic":"2026-10-13T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:*","versionEndExcluding":"4.5.15"},{"vulnerable":true,"criteria":"cpe:2.3:a:blender:blender:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0.0","versionEndExcluding":"5.2.3"}]}]}],"credits":[{"lang":"en","value":"Tristan Madani","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}