{"id":"CVE-2023-29300","kind":"vulnerability","aliases":["CVE-2023-29300"],"related":[],"title":"Adobe ColdFusion versions 2018u16 (and earlier), 2021u6 (and earlier) and 2023.0.0.330468 (and earlier) are affected…","description":"Adobe ColdFusion versions 2018u16 (and earlier), 2021u6 (and earlier) and 2023.0.0.330468 (and earlier) are affected by a Deserialization of Untrusted Data vulnerability that could result in Arbitrary code execution. Exploitation of this issue does not require user interaction.","summary":"Adobe ColdFusion has a deserialization flaw that handles untrusted data unsafely. An attacker can send crafted input to run code on the server.","severity":"critical","cvss":9.8,"epss":null,"exploited":true,"exploited_at":"2024-01-08T00:00:00+00:00","products":[{"name":"Adobe ColdFusion","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"adobe coldfusion","fixed":[],"affected":"= 2018","ecosystem":"vendor"},{"name":"adobe coldfusion","fixed":[],"affected":"= 2021","ecosystem":"vendor"},{"name":"adobe coldfusion","fixed":[],"affected":"= 2023","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["coldfusion","exploited","ransomware","runtime","self-hosted"],"not_affected_if":["managed-hosting"],"how_to_check":null,"fix":"Apply the mitigations from Adobe's vendor advisory or stop using the affected ColdFusion version; the sources do not name the fixed versions.","status":"open","published_at":"2023-07-12T16:15:11+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T21:02:33+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-23T21:02:33Z","model":"claude-haiku-5-5","output":{"fix":"Apply the mitigations from Adobe's vendor advisory or stop using the affected ColdFusion version; the sources do not name the fixed versions.","reach":"unknown","impact":"high","summary":"Adobe ColdFusion has a deserialization flaw that handles untrusted data unsafely. An attacker can send crafted input to run code on the server.","category":"runtime","who_cares":["coldfusion","self-hosted"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Attacker runs code on the ColdFusion server, possibly deploying ransomware.","analyst_note":"Find Adobe's advisory for CVE-2023-29300 to get affected versions, fixed builds, and hotfix steps; the KEV entry alone does not say.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["managed-hosting"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000452,"input_tokens":2811,"output_tokens":342,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2023':17A,20A '-29300':18A,21A '2018u16':4A,63C '2021u6':7A,66C '2023.0.0.330468':11A,70C 'adob':1A,37B,60C 'adobe':22A,24A,26A,28A 'affect':15A,74C 'arbitrari':86C 'attack':49B 'code':56B,87C 'coldfus':2A,30B,38B,61C 'coldfusion':23A,25A,27A,29A 'could':83C 'craft':52B 'cve':16A,19A 'data':46B,80C 'deseri':41B,77C 'earlier':6A,9A,13A,65C,68C,72C 'execut':88C 'exploit':31B,89C 'flaw':42B 'handl':44B 'host':36B 'input':53B 'interact':97C 'issu':92C 'ransomwar':32B 'requir':95C 'result':84C 'run':55B 'runtim':33B 'self':35B 'self-host':34B 'send':51B 'server':59B 'unsaf':47B 'untrust':45B,79C 'user':96C 'version':3A,62C 'vulner':81C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2023-07-12T16:15:11+00:00","kev":{"dateAdded":"2024-01-08","dueDate":"2024-01-29","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Known"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"psirt@adobe.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2023-29300","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-29300","severity":null,"published_at":"2024-01-08T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T16:39:47+00:00","note":null},{"source":"nvd","external_id":"CVE-2023-29300","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-29300","severity":null,"published_at":"2023-07-12T16:15:11+00:00","modified_at":"2026-06-17T05:49:44+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}