{"id":"CVE-2024-40711","kind":"vulnerability","aliases":["CVE-2024-40711"],"related":[],"title":"veeam backup \\& replication: A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code…","description":"Veeam Backup and Replication contains a deserialization vulnerability allowing an unauthenticated user to perform remote code execution.\n\nCISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","summary":"Veeam Backup and Replication has a deserialization flaw that lets an unauthenticated remote attacker run code on the backup server. CISA lists it as exploited in the wild, with ransomware use tagged.","severity":"critical","cvss":9.8,"epss":null,"exploited":true,"exploited_at":"2024-10-17T00:00:00+00:00","products":[{"name":"Veeam Backup & Replication","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"veeam backup \\& replication","fixed":["12.2.0.334"],"affected":">= 12.0.0.1420, < 12.2.0.334","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["backup-server","exploited","infrastructure","ransomware","veeam","windows"],"not_affected_if":["unknown"],"how_to_check":null,"fix":"Apply the Veeam mitigation or patch per vendor instructions; the sources do not name the fixed build.\nIf no mitigation is available, CISA says to discontinue use of the product.","status":"open","published_at":"2024-09-07T17:15:13+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:56:25+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-10-23T20:56:25Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Veeam mitigation or patch per vendor instructions; the sources do not name the fixed build.\nIf no mitigation is available, CISA says to discontinue use of the product.","reach":"network","impact":"high","summary":"Veeam Backup and Replication has a deserialization flaw that lets an unauthenticated remote attacker run code on the backup server. CISA lists it as exploited in the wild, with ransomware use tagged.","category":"infrastructure","who_cares":["veeam","backup-server","windows"],"confidence":0.7,"needs_auth":"no","worst_case":"Unauthenticated attacker runs code on the backup server and can reach backup data.","analyst_note":"Find the vendor advisory and the fixed build number, and check whether the flaw needs a specific service or port exposed; the sources only give the KEV entry.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["unknown"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000462,"input_tokens":2813,"output_tokens":362,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2024':21A,24A '-40711':22A,25A 'action':91C 'allow':15A,80C 'appli':92C 'attack':53B 'backup':2A,27A,30A,33B,41B,58B,73C 'backup-serv':32B 'cisa':60B,89C 'code':19A,55B,87C 'contain':76C 'cve':20A,23A 'data':8A 'deseri':5A,46B,78C 'discontinu':98C 'execut':88C 'exploit':35B,64B 'flaw':47B 'infrastructur':36B 'instruct':96C 'let':49B 'list':61B 'malici':12A 'mitig':93C,104C 'payload':13A 'per':94C 'perform':85C 'product':102C 'ransomwar':37B,69B 'remot':18A,52B,86C 'replic':3A,43B,75C 'replication':28A,31A 'requir':90C 'run':54B 'server':34B,59B 'tag':71B 'unauthent':17A,51B,82C 'unavail':106C 'untrust':7A 'use':70B,99C 'user':83C 'veeam':1A,26A,29A,38B,40B,72C 'vendor':95C 'vulner':9A,79C 'wild':67B 'window':39B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2024-09-07T17:15:13+00:00","kev":{"dateAdded":"2024-10-17","dueDate":"2024-11-07","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":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2024-40711","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2024-40711","severity":null,"published_at":"2024-10-17T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T21:35:47+00:00","note":null},{"source":"nvd","external_id":"CVE-2024-40711","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-40711","severity":null,"published_at":"2024-09-07T17:15:13+00:00","modified_at":"2026-06-17T07:46:23+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"}