{"id":"CVE-2025-22226","kind":"vulnerability","aliases":["CVE-2025-22226"],"related":[],"title":"VMware ESXi, Workstation, and Fusion contain an information disclosure vulnerability due to an out-of-bounds read in…","description":"VMware ESXi, Workstation, and Fusion contain an information disclosure vulnerability due to an out-of-bounds read in HGFS. Successful exploitation allows an attacker with administrative privileges to a virtual machine to leak memory from the vmx process.\n\nCISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"VMware ESXi, Workstation, and Fusion have an out-of-bounds read in the HGFS shared-folder component that leaks memory from the vmx process. An attacker who already has administrative rights inside a virtual machine can read that leaked memory, and CISA lists it as actively exploited.","severity":"high","cvss":7.1,"epss":null,"exploited":true,"exploited_at":"2025-03-04T00:00:00+00:00","products":[{"name":"VMware ESXi, Workstation, and Fusion","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"vmware esxi","fixed":[],"affected":"= 7.0","ecosystem":"vendor"},{"name":"vmware esxi","fixed":[],"affected":"= 8.0","ecosystem":"vendor"},{"name":"vmware cloud foundation","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"vmware fusion","fixed":["13.6.3"],"affected":">= 13.0.0, < 13.6.3","ecosystem":"vendor"},{"name":"vmware telco cloud infrastructure","fixed":[],"affected":"= 2.2","ecosystem":"vendor"},{"name":"vmware telco cloud infrastructure","fixed":[],"affected":"= 2.5","ecosystem":"vendor"},{"name":"vmware telco cloud infrastructure","fixed":[],"affected":"= 2.7","ecosystem":"vendor"},{"name":"vmware telco cloud infrastructure","fixed":[],"affected":"= 3.0","ecosystem":"vendor"},{"name":"vmware telco cloud platform","fixed":[],"affected":"= 2.0","ecosystem":"vendor"},{"name":"vmware telco cloud platform","fixed":[],"affected":"= 2.5","ecosystem":"vendor"},{"name":"vmware telco cloud platform","fixed":[],"affected":"= 2.7","ecosystem":"vendor"},{"name":"vmware telco cloud platform","fixed":[],"affected":"= 3.0","ecosystem":"vendor"},{"name":"vmware telco cloud platform","fixed":[],"affected":"= 4.0","ecosystem":"vendor"},{"name":"vmware telco cloud platform","fixed":[],"affected":"= 4.0.1","ecosystem":"vendor"},{"name":"vmware telco cloud platform","fixed":[],"affected":"= 5.0","ecosystem":"vendor"},{"name":"vmware workstation","fixed":["17.6.3"],"affected":">= 17.0, < 17.6.3","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["esxi","exploited","fusion","infrastructure","virtualization","vmware","workstation"],"not_affected_if":["hgfs-disabled","no-vm-admin-exposure"],"how_to_check":null,"fix":"Apply the vendor mitigations or patches per the VMware advisory; the specific fixed versions are not in the sources.\nIf no mitigation is available, CISA says to discontinue use of the affected product.","status":"open","published_at":"2025-03-04T00:00:00+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:52:14+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T20:52:14Z","model":"claude-haiku-5-5","output":{"fix":"Apply the vendor mitigations or patches per the VMware advisory; the specific fixed versions are not in the sources.\nIf no mitigation is available, CISA says to discontinue use of the affected product.","reach":"local","impact":"medium","summary":"VMware ESXi, Workstation, and Fusion have an out-of-bounds read in the HGFS shared-folder component that leaks memory from the vmx process. An attacker who already has administrative rights inside a virtual machine can read that leaked memory, and CISA lists it as actively exploited.","category":"infrastructure","who_cares":["vmware","esxi","workstation","fusion","virtualization"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker with VM admin leaks host vmx process memory","analyst_note":"Find the VMware advisory for CVE-2025-22226 to get affected and fixed versions, and confirm whether HGFS shared folders are required for exploitation.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["no-vm-admin-exposure","hgfs-disabled"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000481,"input_tokens":2708,"output_tokens":420,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':192C '-2025':20A,23A '-22226':21A,24A '22':191C 'action':182C 'activ':139B 'administr':123B,167C 'allow':163C 'alreadi':121B 'and':28A 'appli':183C 'applic':189C 'attack':119B,165C 'bod':190C 'bound':17A,102B,157C 'cisa':135B,180C 'cloud':35A,41A,45A,49A,53A,57A,61A,65A,69A,73A,77A,81A,195C 'compon':110B 'contain':6A,146C 'cve':19A,22A 'disclosur':9A,149C 'discontinu':198C 'due':11A,151C 'esxi':2A,26A,31A,33A,85B,93B,142C 'exploit':86B,140B,162C 'folder':109B 'follow':188C 'foundation':36A 'fusion':5A,29A,38A,87B,96B,145C 'guidanc':193C 'hgfs':106B,160C 'inform':8A,148C 'infrastructur':88B 'infrastructure':42A,46A,50A,54A 'insid':125B 'instruct':187C 'leak':112B,132B,174C 'list':136B 'machin':128B,172C 'memori':113B,133B,175C 'mitig':184C,204C 'out-of-bound':14A,99B,154C 'per':185C 'platform':58A,62A,66A,70A,74A,78A,82A 'privileg':168C 'process':117B,179C 'product':202C 'read':18A,103B,130B,158C 'requir':181C 'right':124B 'servic':196C 'share':108B 'shared-fold':107B 'success':161C 'telco':40A,44A,48A,52A,56A,60A,64A,68A,72A,76A,80A 'unavail':206C 'use':199C 'vendor':186C 'virtual':89B,127B,171C 'vmware':1A,25A,30A,32A,34A,37A,39A,43A,47A,51A,55A,59A,63A,67A,71A,75A,79A,83A,90B,92B,141C 'vmx':116B,178C 'vulner':10A,150C 'workstat':3A,91B,94B,143C 'workstation':27A,84A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2025-03-04T00:00:00+00:00","kev":{"dateAdded":"2025-03-04","dueDate":"2025-03-25","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","cvss_by":"security@vmware.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2025-22226","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-22226","severity":null,"published_at":"2025-03-04T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T20:35:32+00:00","note":null},{"source":"nvd","external_id":"CVE-2025-22226","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-22226","severity":null,"published_at":"2025-03-04T12:15:33+00:00","modified_at":"2026-06-17T08:45:44+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"}