{"id":"CVE-2026-86383","kind":"vulnerability","aliases":["CVE-2026-86383"],"related":[],"title":"Dell PowerProtect Data Domain: path traversal leaks information to privileged users","description":"Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Information disclosure.","summary":"Several Dell PowerProtect Data Domain releases contain a path traversal flaw that lets a file path escape its intended directory. A high-privileged remote attacker could use it to read information they should not see.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["appliance","backup","data-domain","dell","infrastructure","powerprotect"],"not_affected_if":["no-data-domain","other-dd-os-release"],"how_to_check":"- Check the installed DD OS release on the appliance and compare it against the affected ranges: 7.7.1.0 through 8.8, 8.3.1.0 through 8.3.1.40, and 8.6.1.0 through 8.6.1.20.","fix":"- Move to a DD OS release that Dell lists as fixed; the sources do not name the fixed version, so unknown.","status":"open","published_at":"2026-10-28T10:17:09+00:00","first_seen_at":"2026-10-28T10:32:15+00:00","triaged_at":"2026-10-28T10:34:29+00:00","updated_at":"2026-10-28T10:34:29+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-28T10:34:29Z","model":"claude-haiku-5-5","output":{"fix":"- Move to a DD OS release that Dell lists as fixed; the sources do not name the fixed version, so unknown.","reach":"network","title":"Dell PowerProtect Data Domain: path traversal leaks information to privileged users","impact":"low","summary":"Several Dell PowerProtect Data Domain releases contain a path traversal flaw that lets a file path escape its intended directory. A high-privileged remote attacker could use it to read information they should not see.","category":"infrastructure","nicknames":[],"who_cares":["dell","powerprotect","data-domain","backup","appliance"],"confidence":0.6,"needs_auth":"yes","worst_case":"privileged remote user reads information outside intended directories","analyst_note":"Find the Dell advisory for the fixed DD OS versions and the exact disclosed data, since the NVD text gives neither.","how_to_check":"- Check the installed DD OS release on the appliance and compare it against the affected ranges: 7.7.1.0 through 8.8, 8.3.1.0 through 8.3.1.40, and 8.6.1.0 through 8.6.1.20.","needs_analyst":true,"not_affected_if":["other-dd-os-release","no-data-domain"],"who_is_affected":"Owners of Dell PowerProtect Data Domain appliances on the listed DD OS release ranges. The attacker needs high privileges and remote access, so the exposure depends on who holds admin-level accounts and whether management access is reachable from untrusted networks. Sites on other releases, or not running Data Domain, can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000626,"input_tokens":3404,"output_tokens":572,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-86383':14A,17A '7.7.1.0':69C '8.3.1.0':75C '8.3.1.40':77C '8.6.1.0':81C '8.6.1.20':83C '8.8':71C 'access':104C 'applianc':18B 'attack':51B,101C 'backup':19B 'contain':32B,84C 'could':52B,105C 'cve':12A,15A 'data':3A,21B,29B,64C 'data-domain':20B 'dell':1A,23B,27B,62C 'directori':45B,94C 'disclosur':113C 'domain':4A,22B,30B,65C 'escap':42B 'exploit':107C 'featur':66C 'file':40B 'flaw':36B 'high':48B,99C 'high-privileg':47B 'improp':86C 'inform':8A,57B,112C 'infrastructur':24B 'intend':44B 'lead':110C 'leak':7A 'let':38B 'limit':87C 'lts2025':72C 'lts2026':78C 'path':5A,34B,41B,95C 'pathnam':90C 'potenti':106C 'powerprotect':2A,25B,28B,63C 'privileg':10A,49B,100C 'read':56B 'releas':31B,67C,73C,79C 'remot':50B,103C 'restrict':93C 'see':61B 'sever':26B 'travers':6A,35B,96C 'use':53B 'user':11A 'version':68C,74C,80C 'vulner':97C,109C","nicknames":[],"mitigations":[],"who_affected":"Owners of Dell PowerProtect Data Domain appliances on the listed DD OS release ranges. The attacker needs high privileges and remote access, so the exposure depends on who holds admin-level accounts and whether management access is reachable from untrusted networks. Sites on other releases, or not running Data Domain, can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T10:17:09+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","cvss_by":"security_alert@emc.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-86383","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86383","severity":null,"published_at":"2026-10-28T10:17:09+00:00","modified_at":"2026-10-28T10:17:09+00:00","first_seen_at":"2026-10-28T10:32:15+00:00","fetched_at":"2026-10-28T10:32:15+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"}