{"id":"CVE-2026-109576","kind":"vulnerability","aliases":["CVE-2026-109576"],"related":[],"title":"PEAK-System PCAN driver: malformed record parsing loop miscounts processed bytes","description":"The parser in PEAK-System PCAN driver correctly detected the malformed record, but the loop iterating the record list advanced its processed-bytes counter even when a record had been rejected as invalid.","summary":"The PEAK-System PCAN driver's parser detects a malformed record but still advances its processed-bytes counter when it rejects that record. The sources do not say what an attacker gains beyond this parsing fault.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","linux","pcan","peak-system","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-10-20T21:17:15+00:00","first_seen_at":"2026-10-23T21:57:21+00:00","triaged_at":"2026-10-25T03:44:35+00:00","updated_at":"2026-10-25T03:44:35+00:00","category":"infrastructure","confidence":0.3,"triage":{"at":"2026-10-25T03:44:35Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"unknown","title":"PEAK-System PCAN driver: malformed record parsing loop miscounts processed bytes","impact":"medium","summary":"The PEAK-System PCAN driver's parser detects a malformed record but still advances its processed-bytes counter when it rejects that record. The sources do not say what an attacker gains beyond this parsing fault.","category":"infrastructure","nicknames":[],"who_cares":["peak-system","pcan","windows","linux"],"confidence":0.3,"needs_auth":"unknown","worst_case":"unknown","analyst_note":"Check the NVD entry and the PEAK-System advisory for affected driver versions, platforms, attack vector and fixed release.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000494,"input_tokens":3280,"output_tokens":333,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-109576':15A,18A '-2026':14A,17A 'advanc':40B,84C 'attack':58B 'beyond':60B 'byte':12A,44B,88C 'correct':72C 'counter':45B,89C 'cve':13A,16A 'detect':34B,73C 'driver':5A,31B,71C 'even':90C 'fault':63B 'gain':59B 'infrastructur':19B 'invalid':98C 'iter':80C 'linux':20B 'list':83C 'loop':9A,79C 'malform':6A,36B,75C 'miscount':10A 'pars':8A,62B 'parser':33B,65C 'pcan':4A,21B,30B,70C 'peak':2A,23B,28B,68C 'peak-system':1A,22B,27B,67C 'process':11A,43B,87C 'processed-byt':42B,86C 'record':7A,37B,50B,76C,82C,93C 'reject':48B,96C 'say':55B 'sourc':52B 'still':39B 'system':3A,24B,29B,69C 'window':25B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T21:17:15+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"ics-cert@hq.dhs.gov","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-109576","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109576","severity":null,"published_at":"2026-10-20T21:17:15+00:00","modified_at":"2026-10-22T17:36:46+00:00","first_seen_at":"2026-10-23T21:57:21+00:00","fetched_at":"2026-10-23T22:28:58+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"}