{"id":"CVE-2024-40711","published":"2024-09-07T17:15:13Z","modified":"2026-06-17T07:46:23Z","title":"Veeam Backup and Replication Deserialization Vulnerability","vendor":"Veeam","product":"Backup & Replication","tier":"core","eol":null,"description":{"text":"A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE).","provenance":"source","from":"NVD"},"summary":{"text":"A deserialization of untrusted data flaw in Veeam's Backup & Replication product allows remote code execution. An attacker who sends a malicious serialized payload can run code on the affected system without authentication, over the network, with no user interaction needed.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T06:56:20Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.90369,"percentile":0.99798,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2024-10-17","dueDate":"2024-11-07","ransomware":true,"requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","notes":"https://www.veeam.com/kb4649 ; https://nvd.nist.gov/vuln/detail/CVE-2024-40711","provenance":"source"},"vulncheckKev":{"dateAdded":"2024-04-23","exploitedFirstSeen":"2024-04-23","ransomware":true,"evidence":[{"url":"https://www.fortiguard.com/outbreak-alert/akira-ransomware","date":"2024-04-23"},{"url":"https://vulnera.com/newswire/critical-remote-code-execution-vulnerability-detected-in-veeam-backup-replication-software/","date":"2024-09-05"},{"url":"https://www.ptsecurity.com/ru-ru/research/analytics/dajdzhest-trendovyh-uyazvimostej-sentyabr-2024-goda/","date":"2024-10-09"},{"url":"https://infosec.exchange/@SophosXOps/113284564225476186","date":"2024-10-10"},{"url":"https://x.com/SophosXOps/status/1844447794976915887","date":"2024-10-10"},{"url":"https://digital.nhs.uk/cyber-alerts/2024/cc-4563","date":"2024-10-11"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2024-10-17"},{"url":"https://blog.talosintelligence.com/akira-ransomware-continues-to-evolve/","date":"2024-10-21"},{"url":"https://news.sophos.com/en-us/2024/11/08/veeam-exploit-seen-used-again-with-a-new-ransomware-frag/","date":"2024-11-08"},{"url":"https://www.cyfirma.com/research/tracking-ransomware-october-2024/","date":"2024-11-08"}],"evidenceTotal":32,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"SafePay Ransomware Has Affected 600+ Organizations by Exploiting VPNs and Backup Servers","url":"https://otx.alienvault.com/pulse/6ad8700a0fe145230ba94c11","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"}],"provenance":"machine"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"https://www.veeam.com/kb4649","tags":["Vendor Advisory"]},{"url":"https://labs.watchtowr.com/veeam-backup-response-rce-with-auth-but-mostly-without-auth-cve-2024-40711-2/","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-40711","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Unauthenticated remote exploitation of public-facing service","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allow an unauthenticated remote code execution (RCE)","start":79,"end":131}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Remote code execution achieves command execution","mappingType":"primary_impact","evidence":[{"from":"description","quote":"allow an unauthenticated remote code execution (RCE)","start":79,"end":131}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2024-38578","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-38578","exploited":true,"exploitedSince":"2024-10-17","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":2,"skipped":0,"earliest":"2024-09-15","earliestUrl":"https://github.com/watchtowrlabs/CVE-2024-40711","repos":[{"name":"watchtowrlabs/CVE-2024-40711","url":"https://github.com/watchtowrlabs/CVE-2024-40711","stars":55,"created":"2024-09-15"},{"name":"realstatus/CVE-2024-40711-Exp","url":"https://github.com/realstatus/CVE-2024-40711-Exp","stars":42,"created":"2024-10-16"}]},"nuclei":[{"id":"CVE-2024-40711","name":"Veeam Backup & Replication - Unauthenticated","severity":"critical","path":"http/cves/2024/CVE-2024-40711.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-40711.yaml"}],"first":{"date":"2024-09-15","source":"PoC-in-GitHub","url":"https://github.com/watchtowrlabs/CVE-2024-40711"},"provenance":"source"},"exploitRefs":["https://labs.watchtowr.com/veeam-backup-response-rce-with-auth-but-mostly-without-auth-cve-2024-40711-2/"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2024-04-23","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.fortiguard.com/outbreak-alert/akira-ransomware","provenance":"source"},{"date":"2024-09-07","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-40711","provenance":"source"},{"date":"2024-09-15","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/watchtowrlabs/CVE-2024-40711","provenance":"source"},{"date":"2024-10-17","kind":"kev","label":"Added to CISA KEV (known ransomware use)","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2024-10-17","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2024-38578","provenance":"source"}],"speed":{"daysToPublicExploit":8,"firstExploitFrom":"PoC-in-GitHub","daysToKev":40},"priority":{"score":79.8,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 920 days ago"},{"name":"Known ransomware use","points":10.0,"detail":"CISA KEV and VulnCheck KEV: Known"},{"name":"EPSS percentile","points":19.96,"detail":"percentile 0.9980"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit; 2 PoC-in-GitHub repos; 1 nuclei template"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}