{"id":"CVE-2026-110063","kind":"vulnerability","aliases":["CVE-2026-110063"],"related":[],"title":"Azure VM Inspector: link following lets attacker gain elevated privileges","description":"Improper link resolution before file access ('link following') in VM Inspector for Azure Virtual Machines allows an unauthorized attacker to elevate privileges over a network.","summary":"VM Inspector for Azure Virtual Machines follows symbolic links before accessing files, so an unauthorized attacker can redirect file access. The attacker can elevate privileges over the network.","severity":"critical","cvss":10.0,"epss":0.00888,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["azure","cloud-service","infrastructure","vendor","virtual-machines","vm-inspector"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"resolved","published_at":"2026-10-22T22:18:00+00:00","first_seen_at":"2026-10-23T21:57:32+00:00","triaged_at":"2026-10-23T22:31:41+00:00","updated_at":"2026-10-24T07:15:51+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-23T22:31:41Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Azure VM Inspector: link following lets attacker gain elevated privileges","impact":"high","summary":"VM Inspector for Azure Virtual Machines follows symbolic links before accessing files, so an unauthorized attacker can redirect file access. The attacker can elevate privileges over the network.","category":"vendor","who_cares":["azure","virtual-machines"],"confidence":0.6,"needs_auth":"no","worst_case":"unauthorized attacker gains elevated privileges on the affected VM over the network","analyst_note":"Confirm the affected VM Inspector versions, the patched version, and any Azure-side mitigation from the NVD entry or the Microsoft advisory for CVE-2026-110063.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":[],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000454,"input_tokens":2898,"output_tokens":329,"severity_before":"critical"},"analyst_status":"done","analyst_note":"Find the Microsoft advisory for CVE-2026-110063 to get affected VM Inspector versions, the patched build, and whether the flaw is the Linux or Windows extension.","search":"'-110063':13A,16A '-2026':12A,15A 'access':39B,48B,62C 'allow':72C 'attack':7A,44B,50B,75C 'azur':1A,17B,32B,69C 'cloud':19B 'cloud-servic':18B 'cve':11A,14A 'elev':9A,52B,77C 'file':40B,47B,61C 'follow':5A,35B,64C 'gain':8A 'improp':57C 'infrastructur':21B 'inspector':3A,28B,30B,67C 'let':6A 'link':4A,37B,58C,63C 'machin':25B,34B,71C 'network':56B,81C 'privileg':10A,53B,78C 'redirect':46B 'resolut':59C 'servic':20B 'symbol':36B 'unauthor':43B,74C 'vendor':22B 'virtual':24B,33B,70C 'virtual-machin':23B 'vm':2A,27B,29B,66C 'vm-inspector':26B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T22:18:00+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-110063","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110063","severity":null,"published_at":"2026-10-22T22:18:00+00:00","modified_at":"2026-10-23T19:43:46+00:00","first_seen_at":"2026-10-23T21:57:32+00:00","fetched_at":"2026-10-23T22:29:03+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-110063:147","url":null,"severity":null,"published_at":"2026-10-23T21:59:27+00:00","modified_at":"2026-10-23T21:59:27+00:00","first_seen_at":"2026-10-23T21:59:27+00:00","fetched_at":"2026-10-23T21:59:27+00:00","note":"MSRC page read: cloud-service CVE, no action required, not publicly disclosed, not exploited, exploit maturity Unproven, no build numbers. Linux vs Windows extension is not stated; the advisory says only 'VM Inspector for Azure Virtual Machines'. Credit: wtm (Offensi). X shows 7 posts today for the CVE id, not pulled; likely feed bots. Severity left at critical per the vendor's CVSS 10.0."},{"source":"epss","external_id":"CVE-2026-110063","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110063","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:51+00:00","fetched_at":"2026-10-25T12:38:51+00:00","note":null}],"documents":[{"id":1251,"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-110063","title":"MSRC: VM Inspector for Azure Virtual Machines Elevation of Privilege Vulnerability","kind":"advisory","source":"analyst","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":null}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}