{"id":"CVE-2026-58810","kind":"vulnerability","aliases":["CVE-2026-58810"],"related":[],"title":"Secure vector predicate and fault registers leak to non-secure callers","description":"In multiple functions of simd_ctx.c, there is a possible way to disclose secure vector predicate and fault registers to non-secure callers due to uninitialized data. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.","summary":"Several functions in simd_ctx.c use uninitialized data, so secure vector predicate and fault register values can be read by non-secure callers. An attacker with local code running at System privilege could learn that register state.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["arm","embedded","infrastructure","trusted-firmware"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T20:19:28+00:00","first_seen_at":"2026-11-10T20:46:12+00:00","triaged_at":"2026-11-10T20:50:10+00:00","updated_at":"2026-11-10T20:50:10+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-11-10T20:50:10Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Secure vector predicate and fault registers leak to non-secure callers","impact":"low","summary":"Several functions in simd_ctx.c use uninitialized data, so secure vector predicate and fault register values can be read by non-secure callers. An attacker with local code running at System privilege could learn that register state.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["arm","trusted-firmware","embedded"],"confidence":0.4,"fix_status":"unknown","needs_auth":"yes","worst_case":"Secure vector register state is readable by non-secure code","analyst_note":"Identify the affected product and firmware versions from the NVD entry and the vendor bulletin; the signal lists no products or fixed versions.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000632,"input_tokens":4536,"output_tokens":356,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':14A,17A '-58810':15A,18A 'arm':19B 'attack':50B 'caller':12A,48B,86C 'code':53B 'could':58B,92C 'ctx.c':29B,68C 'cve':13A,16A 'data':32B,90C 'disclos':75C 'disclosur':97C 'due':87C 'embed':20B 'execut':100C 'exploit':109C 'fault':5A,38B,80C 'firmwar':24B 'function':26B,65C 'inform':96C 'infrastructur':21B 'interact':104C 'lead':93C 'leak':7A 'learn':59B 'local':52B,95C 'multipl':64C 'need':102C,107C 'non':10A,46B,84C 'non-secur':9A,45B,83C 'possibl':72C 'predic':3A,36B,78C 'privileg':57B,101C 'read':43B 'regist':6A,39B,61B,81C 'run':54B 'secur':1A,11A,34B,47B,76C,85C 'sever':25B 'simd':28B,67C 'state':62B 'system':56B,99C 'trust':23B 'trusted-firmwar':22B 'uniniti':31B,89C 'use':30B 'user':103C 'valu':40B 'vector':2A,35B,77C 'way':73C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["arm","embedded","infrastructure","trustedfirmware","unknown"],"campaign_type":null,"search_a":"'-2026':14A,17A '-58810':15A,18A 'caller':12A 'cve':13A,16A 'fault':5A 'leak':7A 'non':10A 'non-secur':9A 'predic':3A 'regist':6A 'secur':1A,11A 'vector':2A","search_b":"'arm':19B 'attack':50B 'caller':48B 'code':53B 'could':58B 'ctx.c':29B 'data':32B 'embed':20B 'fault':38B 'firmwar':24B 'function':26B 'infrastructur':21B 'learn':59B 'local':52B 'non':46B 'non-secur':45B 'predic':36B 'privileg':57B 'read':43B 'regist':39B,61B 'run':54B 'secur':34B,47B 'sever':25B 'simd':28B 'state':62B 'system':56B 'trust':23B 'trusted-firmwar':22B 'uniniti':31B 'use':30B 'valu':40B 'vector':35B","search_c":"'caller':86C 'could':92C 'ctx.c':68C 'data':90C 'disclos':75C 'disclosur':97C 'due':87C 'execut':100C 'exploit':109C 'fault':80C 'function':65C 'inform':96C 'interact':104C 'lead':93C 'local':95C 'multipl':64C 'need':102C,107C 'non':84C 'non-secur':83C 'possibl':72C 'predic':78C 'privileg':101C 'regist':81C 'secur':76C,85C 'simd':67C 'system':99C 'uniniti':89C 'user':103C 'vector':77C 'way':73C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T20:19:28+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-58810","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58810","severity":null,"published_at":"2026-11-10T20:19:28+00:00","modified_at":"2026-11-10T20:19:28+00:00","first_seen_at":"2026-11-10T20:46:12+00:00","fetched_at":"2026-11-10T20:46:12+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}