{"id":"CVE-2026-87101","kind":"vulnerability","aliases":["CVE-2026-87101"],"related":[],"title":"Acronis Cyber Protect 17: improper token validation leaks sensitive information","description":"Sensitive information disclosure due to improper token validation. The following products are affected: Acronis Cyber Protect 17 (Linux, Windows) before build 42587.","summary":"Acronis Cyber Protect 17 on Linux and Windows, before build 42587, does not validate tokens properly. An attacker can read sensitive information the product should keep from them.","severity":"medium","cvss":6.2,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["acronis-cyber-protect","linux","other","windows"],"not_affected_if":["build-42587-or-later"],"how_to_check":"- Check the installed Acronis Cyber Protect 17 build number in the product's About or version screen; the sources do not give a command.","fix":"- Update Acronis Cyber Protect 17 to build `42587` or later, as stated in the advisory text.","status":"open","published_at":"2026-10-28T11:17:27+00:00","first_seen_at":"2026-10-28T11:32:34+00:00","triaged_at":"2026-10-28T11:33:31+00:00","updated_at":"2026-10-28T11:33:31+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-10-28T11:33:31Z","model":"claude-haiku-5-5","output":{"fix":"- Update Acronis Cyber Protect 17 to build `42587` or later, as stated in the advisory text.","reach":"unknown","title":"Acronis Cyber Protect 17: improper token validation leaks sensitive information","impact":"medium","summary":"Acronis Cyber Protect 17 on Linux and Windows, before build 42587, does not validate tokens properly. An attacker can read sensitive information the product should keep from them.","category":"other","nicknames":[],"who_cares":["acronis-cyber-protect","windows","linux"],"confidence":0.5,"needs_auth":"unknown","worst_case":"attacker reads sensitive information the product exposes","analyst_note":"Check the Acronis security advisory for the exact flaw, required access, and affected components; the NVD entry alone gives no detail.","how_to_check":"- Check the installed Acronis Cyber Protect 17 build number in the product's About or version screen; the sources do not give a command.","needs_analyst":true,"not_affected_if":["build-42587-or-later"],"who_is_affected":"Teams running Acronis Cyber Protect 17 on Linux or Windows with a build older than 42587. The sources do not say which configuration or role is needed to reach the flawed token check, so the exact exposure path is unknown.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000565,"input_tokens":3251,"output_tokens":480,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-87101':13A,16A '17':4A,27B,66C '42587':34B,71C 'acroni':1A,18B,24B,63C 'acronis-cyber-protect':17B 'affect':62C 'attack':41B 'build':33B,70C 'cve':11A,14A 'cyber':2A,19B,25B,64C 'disclosur':52C 'due':53C 'follow':59C 'improp':5A,55C 'inform':10A,45B,51C 'keep':49B 'leak':8A 'linux':21B,29B,67C 'product':47B,60C 'proper':39B 'protect':3A,20B,26B,65C 'read':43B 'sensit':9A,44B,50C 'token':6A,38B,56C 'valid':7A,37B,57C 'window':23B,31B,68C","nicknames":[],"mitigations":[],"who_affected":"Teams running Acronis Cyber Protect 17 on Linux or Windows with a build older than 42587. The sources do not say which configuration or role is needed to reach the flawed token check, so the exact exposure path is unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T11:17:27+00:00","kev":null,"cvss_vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cvss_by":"security@acronis.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-87101","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87101","severity":null,"published_at":"2026-10-28T11:17:27+00:00","modified_at":"2026-10-28T11:17:27+00:00","first_seen_at":"2026-10-28T11:32:34+00:00","fetched_at":"2026-10-28T11:32:34+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"}