{"id":"CVE-2026-20596","kind":"vulnerability","aliases":["CVE-2026-20596"],"related":[],"title":"Modem: out-of-bounds read lets a rogue base station crash the phone","description":"In Modem, there is a possible out of bounds read due to improper input validation. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01758225; Issue ID: MSV-8910.","summary":"A flaw in the modem firmware reads memory outside a buffer when it processes input from a base station. An attacker running a rogue base station can make a connected device stop responding (remote denial of service) without user interaction.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cellular","infrastructure","mobile-devices","modem"],"not_affected_if":["unknown"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-02T03:17:37+00:00","first_seen_at":"2026-11-02T03:31:26+00:00","triaged_at":"2026-11-02T03:32:05+00:00","updated_at":"2026-11-02T03:32:05+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-02T03:32:05Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Modem: out-of-bounds read lets a rogue base station crash the phone","impact":"low","summary":"A flaw in the modem firmware reads memory outside a buffer when it processes input from a base station. An attacker running a rogue base station can make a connected device stop responding (remote denial of service) without user interaction.","audience":"everyone","category":"infrastructure","nicknames":[],"who_cares":["modem","mobile-devices","cellular"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"Device modem stops responding until restarted, a denial of service.","analyst_note":"Find the NVD/vendor bulletin naming the affected MediaTek modem chipsets and fixed firmware versions for Patch ID MOLY01758225.","how_to_check":"- unknown","plain_action":"Install the latest phone software update from your device maker as soon as it is offered; the source names a Modem patch but no version.","needs_analyst":true,"not_affected_if":["unknown"],"who_is_affected":"Devices with the affected modem firmware that connect to a cellular network, where an attacker can operate a fake base station nearby. The sources do not name the affected products or versions, so the exact devices are unknown.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000648,"input_tokens":4115,"output_tokens":473,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':16A,19A '-20596':17A,20A '-8910':123C 'addit':106C 'attack':47B,103C 'base':10A,44B,51B,98C 'bound':5A,75C 'buffer':37B 'cellular':21B 'connect':56B,94C 'control':100C 'could':83C 'crash':12A 'cve':15A,18A 'denial':61B,87C 'devic':25B,57B 'due':77C 'execut':107C 'exploit':116C 'firmwar':32B 'flaw':28B 'id':118C,121C 'improp':79C 'infrastructur':22B 'input':41B,80C 'interact':66B,111C 'issu':120C 'lead':84C 'let':7A 'make':54B 'memori':34B 'mobil':24B 'mobile-devic':23B 'modem':1A,26B,31B,68C 'moly01758225':119C 'msv':122C 'need':109C,114C 'out-of-bound':2A 'outsid':35B 'patch':117C 'phone':14A 'possibl':72C 'privileg':108C 'process':40B 'read':6A,33B,76C 'remot':60B,86C 'respond':59B 'rogu':9A,50B,97C 'run':48B 'servic':63B,89C 'station':11A,45B,52B,99C 'stop':58B 'ue':92C 'user':65B,110C 'valid':81C 'without':64B","nicknames":[],"mitigations":[],"who_affected":"Devices with the affected modem firmware that connect to a cellular network, where an attacker can operate a fake base station nearby. The sources do not name the affected products or versions, so the exact devices are unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"everyone","plain_action":"Install the latest phone software update from your device maker as soon as it is offered; the source names a Modem patch but no version.","pkeys":[],"ptokens":[],"labels":["cellular","infrastructure","mobiledevices","modem","unknown"],"first_public_at":"2026-11-02T03:17:37+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-20596","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20596","severity":null,"published_at":"2026-11-02T03:17:37+00:00","modified_at":"2026-11-02T03:17:37+00:00","first_seen_at":"2026-11-02T03:31:26+00:00","fetched_at":"2026-11-02T03:31:26+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"}