{"id":"CVE-2026-58690","kind":"vulnerability","aliases":["CVE-2026-58690"],"related":[],"title":"Trusted execution environment bitmap code: out-of-bounds write enables local privilege escalation","description":"In multiple functions of bitmap_image_buffer.h, there is a possible way to trigger an out of bounds write on the trusted execution environment heap due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","summary":"Several functions in bitmap_image_buffer.h can be made to write past the end of a buffer on the trusted execution environment heap, caused by an integer overflow. A local attacker with no extra privileges could use this to escalate privilege.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"bitmap_image_buffer.h","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["infrastructure","trusted-execution-environment"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T20:19:23+00:00","first_seen_at":"2026-11-10T20:46:09+00:00","triaged_at":"2026-11-10T20:52:00+00:00","updated_at":"2026-11-10T20:52:00+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-11-10T20:52:00Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Trusted execution environment bitmap code: out-of-bounds write enables local privilege escalation","impact":"high","summary":"Several functions in bitmap_image_buffer.h can be made to write past the end of a buffer on the trusted execution environment heap, caused by an integer overflow. A local attacker with no extra privileges could use this to escalate privilege.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["trusted-execution-environment"],"confidence":0.4,"fix_status":"unknown","needs_auth":"no","worst_case":"local attacker gains elevated privilege on the device","analyst_note":"Identify the vendor and affected product versions and the fixed build from the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-58690 or the vendor advisory it cites.","how_to_check":"unknown","plain_action":"","product_name":"bitmap_image_buffer.h","needs_analyst":true,"not_affected_if":[],"who_is_affected":"The sources do not name the affected vendor, product or versions, so the exposed systems cannot be identified from them. Teams should look for the bitmap_image_buffer.h component in their trusted execution environment builds. No user interaction is needed for exploitation, per the description.","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000707,"input_tokens":4544,"output_tokens":506,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-58690':17A,20A 'addit':110C 'attack':59B 'bitmap':4A,21A,32B,74C 'bound':9A,87C 'buffer':45B 'buffer.h':23A,34B,76C 'caus':52B 'code':5A 'could':64B,101C 'cve':15A,18A 'due':95C 'enabl':11A 'end':42B 'environ':3A,28B,50B,93C 'escal':14A,68B,105C 'execut':2A,27B,49B,92C,111C 'exploit':120C 'extra':62B 'function':30B,72C 'heap':51B,94C 'imag':33B,75C 'image':22A 'infrastructur':24B 'integ':55B,98C 'interact':115C 'lead':102C 'local':12A,58B,104C 'made':37B 'multipl':71C 'need':113C,118C 'out-of-bound':6A 'overflow':56B,99C 'past':40B 'possibl':80C 'privileg':13A,63B,69B,107C,112C 'sever':29B 'trigger':83C 'trust':1A,26B,48B,91C 'trusted-execution-environ':25B 'use':65B 'user':114C 'way':81C 'write':10A,39B,88C","nicknames":[],"mitigations":[],"who_affected":"The sources do not name the affected vendor, product or versions, so the exposed systems cannot be identified from them. Teams should look for the bitmap_image_buffer.h component in their trusted execution environment builds. No user interaction is needed for exploitation, per the description.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["bitmapimagebufferh"],"ptokens":["bitmap","buffer","image"],"labels":["infrastructure","trustedexecutionenvironment","unknown","vendor"],"campaign_type":null,"search_a":"'-2026':16A,19A '-58690':17A,20A 'bitmap':4A,21A 'bound':9A 'buffer.h':23A 'code':5A 'cve':15A,18A 'enabl':11A 'environ':3A 'escal':14A 'execut':2A 'image':22A 'local':12A 'out-of-bound':6A 'privileg':13A 'trust':1A 'write':10A","search_b":"'attack':59B 'bitmap':32B 'buffer':45B 'buffer.h':34B 'caus':52B 'could':64B 'end':42B 'environ':28B,50B 'escal':68B 'execut':27B,49B 'extra':62B 'function':30B 'heap':51B 'imag':33B 'infrastructur':24B 'integ':55B 'local':58B 'made':37B 'overflow':56B 'past':40B 'privileg':63B,69B 'sever':29B 'trust':26B,48B 'trusted-execution-environ':25B 'use':65B 'write':39B","search_c":"'addit':110C 'bitmap':74C 'bound':87C 'buffer.h':76C 'could':101C 'due':95C 'environ':93C 'escal':105C 'execut':92C,111C 'exploit':120C 'function':72C 'heap':94C 'imag':75C 'integ':98C 'interact':115C 'lead':102C 'local':104C 'multipl':71C 'need':113C,118C 'overflow':99C 'possibl':80C 'privileg':107C,112C 'trigger':83C 'trust':91C 'user':114C 'way':81C 'write':88C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T20:19:23+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-58690","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58690","severity":null,"published_at":"2026-11-10T20:19:23+00:00","modified_at":"2026-11-10T20:19:23+00:00","first_seen_at":"2026-11-10T20:46:09+00:00","fetched_at":"2026-11-10T20:46:09+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"}