{"id":"CVE-2025-34511","published":"2025-06-17T19:05:10Z","modified":"2026-02-26T17:50:30Z","title":"Sitecore PowerShell Extension RCE via Unrestricted Upload","vendor":"Sitecore","product":"Powershell Extension","tier":"core","eol":null,"affectedVersions":[{"vendor":"Sitecore","product":"Powershell Extension","versions":["<= 7.0"]}],"description":{"text":"Sitecore PowerShell Extensions, an add-on to Sitecore Experience Manager (XM) and Experience Platform (XP), through version 7.0 is vulnerable to an unrestricted file upload issue. A remote, authenticated attacker can upload arbitrary files to the server using crafted HTTP requests, resulting in remote code execution.","provenance":"source","from":"CVE.org"},"summary":{"text":"The Sitecore PowerShell Extensions add-on for Sitecore Experience Manager (XM) and Experience Platform (XP), through version 7.0, contains an unrestricted file upload flaw that permits uploading files of dangerous types. A remote attacker who has valid authentication can send crafted HTTP requests to upload arbitrary files to the server, which leads to remote code execution.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-31T05:10:43Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.30446,"percentile":0.98232,"date":"2026-10-30","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2025-06-22","exploitedFirstSeen":"2025-06-22","ransomware":false,"evidence":[{"url":"https://app.crowdsec.net/cti/cve-explorer/CVE-2025-34511","date":"2025-06-22"},{"url":"https://www.crowdsec.net/vulntracking-report/june-2025","date":"2025-07-10"}],"evidenceTotal":2,"provenance":"source"},"exploited":true,"otx":{"pulseCount":2,"pulses":[{"name":"Cache Me If You Can (Sitecore Experience Platform Cache Poisoning.","url":"https://otx.alienvault.com/pulse/68b29ae275957ae526469bef","created":"2025-08-30"},{"name":"Is b For Backdoor? Pre-Auth RCE Chain In Sitecore Experience Platform","url":"https://otx.alienvault.com/pulse/6855245bd889bb00859d26fa","created":"2025-06-20"}],"provenance":"machine"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"references":[{"url":"https://labs.watchtowr.com/is-b-for-backdoor-pre-auth-rce-chain-in-sitecore-experience-platform/","tags":["third-party-advisory","exploit","technical-description"]},{"url":"https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003667","tags":["vendor-advisory"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2025-18568","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-18568","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":{"metasploit":[{"name":"Sitecore XP CVE-2025-34511 Post-Authentication File Upload","module":"exploit/windows/http/sitecore_xp_cve_2025_34511","type":"exploit","disclosureDate":"2025-06-17","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sitecore_xp_cve_2025_34511.rb"}],"first":{"date":"2025-06-17","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sitecore_xp_cve_2025_34511.rb"},"provenance":"source"},"exploitRefs":["https://labs.watchtowr.com/is-b-for-backdoor-pre-auth-rce-chain-in-sitecore-experience-platform/"],"flow":[],"timeline":[{"date":"2025-06-17","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2025-34511","provenance":"source"},{"date":"2025-06-17","kind":"exploit-public","label":"First public exploit: Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/sitecore_xp_cve_2025_34511.rb","provenance":"source"},{"date":"2025-06-22","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://app.crowdsec.net/cti/cve-explorer/CVE-2025-34511","provenance":"source"}],"speed":{"daysToPublicExploit":0,"firstExploitFrom":"Metasploit","daysToKev":null},"priority":{"score":66.9,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 496 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.65,"detail":"percentile 0.9823"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD reference tagged Exploit; 1 Metasploit module"},{"name":"Mentioned in OTX pulses","points":1.08,"detail":"2 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}