{"id":"CVE-2026-20598","kind":"vulnerability","aliases":["CVE-2026-20598"],"related":[],"title":"Modem: integer overflow lets a rogue base station crash a phone","description":"In Modem, there is a possible out of bounds read due to an integer overflow. 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: MOLY01755742; Issue ID: MSV-8896.","summary":"A flaw in the modem firmware causes an out-of-bounds read from an integer overflow. A device that connects to an attacker-controlled rogue base station can be crashed remotely, a denial of service.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["cellular","infrastructure","mobile","modem"],"not_affected_if":["no-cellular-modem"],"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: integer overflow lets a rogue base station crash a phone","impact":"low","summary":"A flaw in the modem firmware causes an out-of-bounds read from an integer overflow. A device that connects to an attacker-controlled rogue base station can be crashed remotely, a denial of service.","audience":"everyone","category":"infrastructure","nicknames":[],"who_cares":["mobile","modem","cellular"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"Remote denial of service: the modem or device crashes or stops responding.","analyst_note":"Find the affected device list and the patched firmware or security bulletin for patch ID MOLY01755742 and issue MSV-8896.","how_to_check":"unknown","plain_action":"","needs_analyst":true,"not_affected_if":["no-cellular-modem"],"who_is_affected":"Devices with the affected modem firmware that connect to cellular networks can be forced to connect to a rogue base station. The sources do not list the affected devices or modem versions. Systems with no cellular modem are not affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000627,"input_tokens":4117,"output_tokens":430,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-20598':14A,17A '-8896':115C 'addit':98C 'attack':46B,95C 'attacker-control':45B 'base':7A,49B,90C 'bound':33B,67C 'caus':28B 'cellular':18B 'connect':42B,86C 'control':47B,92C 'could':75C 'crash':9A,53B 'cve':12A,15A 'denial':56B,79C 'devic':40B 'due':69C 'execut':99C 'exploit':108C 'firmwar':27B 'flaw':23B 'id':110C,113C 'infrastructur':19B 'integ':2A,37B,72C 'interact':103C 'issu':112C 'lead':76C 'let':4A 'mobil':20B 'modem':1A,21B,26B,60C 'moly01755742':111C 'msv':114C 'need':101C,106C 'out-of-bound':30B 'overflow':3A,38B,73C 'patch':109C 'phone':11A 'possibl':64C 'privileg':100C 'read':34B,68C 'remot':54B,78C 'rogu':6A,48B,89C 'servic':58B,81C 'station':8A,50B,91C 'ue':84C 'user':102C","nicknames":[],"mitigations":[],"who_affected":"Devices with the affected modem firmware that connect to cellular networks can be forced to connect to a rogue base station. The sources do not list the affected devices or modem versions. Systems with no cellular modem are not affected.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"everyone","plain_action":null,"pkeys":[],"ptokens":[],"labels":["cellular","infrastructure","mobile","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-2026-20598","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20598","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"}