Vulnerability Details CVE-2020-3511
A vulnerability in the ISDN subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the ISDN Q.931 messages are processed. An attacker could exploit this vulnerability by sending a malicious ISDN Q.931 message to an affected device. A successful exploit could allow the attacker to cause the process to crash, resulting in a reload of the affected device.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 29.3%
CVSS Severity
CVSS v3 Score 7.4
CVSS v2 Score 6.1
References
Products affected by CVE-2020-3511
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cpe:2.3:h:cisco:1100-4g_integrated_services_router:-
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cpe:2.3:h:cisco:1100-4gltegb_integrated_services_router:-
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cpe:2.3:h:cisco:1100-4gltena_integrated_services_router:-
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cpe:2.3:h:cisco:1100-4p_integrated_services_router:-
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cpe:2.3:h:cisco:1100-6g_integrated_services_router:-
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cpe:2.3:h:cisco:1100-8p_integrated_services_router:-
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cpe:2.3:h:cisco:1100-lte_integrated_services_router:-
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cpe:2.3:h:cisco:1100_integrated_services_router:-
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cpe:2.3:h:cisco:1101-4p_integrated_services_router:-
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cpe:2.3:h:cisco:1101_integrated_services_router:-
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cpe:2.3:h:cisco:1109-2p_integrated_services_router:-
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cpe:2.3:h:cisco:1109-4p_integrated_services_router:-
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cpe:2.3:h:cisco:1109_integrated_services_router:-
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cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-
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cpe:2.3:h:cisco:1111x_integrated_services_router:-
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cpe:2.3:h:cisco:111x_integrated_services_router:-
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cpe:2.3:h:cisco:1120_integrated_services_router:-
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cpe:2.3:h:cisco:1160_integrated_services_router:-
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cpe:2.3:h:cisco:422_integrated_services_router:-
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cpe:2.3:h:cisco:4321/k9-rf_integrated_services_router:-
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cpe:2.3:h:cisco:4321/k9-ws_integrated_services_router:-
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cpe:2.3:h:cisco:4321/k9_integrated_services_router:-
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cpe:2.3:h:cisco:4331/k9-rf_integrated_services_router:-
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cpe:2.3:h:cisco:4331/k9-ws_integrated_services_router:-
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cpe:2.3:h:cisco:4331/k9_integrated_services_router:-
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cpe:2.3:h:cisco:4351/k9-rf_integrated_services_router:-
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cpe:2.3:h:cisco:4351/k9-ws_integrated_services_router:-
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cpe:2.3:h:cisco:4351/k9_integrated_services_router:-
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cpe:2.3:h:cisco:4431_integrated_services_router:-
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cpe:2.3:h:cisco:4461_integrated_services_router:-
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cpe:2.3:h:cisco:asr1001-hx-rf:-
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cpe:2.3:h:cisco:asr1001-hx:-
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cpe:2.3:h:cisco:asr1001-x-rf:-
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cpe:2.3:h:cisco:asr1001-x-ws:-
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cpe:2.3:h:cisco:asr1001-x:-
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cpe:2.3:h:cisco:asr1002-hx-rf:-
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cpe:2.3:h:cisco:asr1002-hx-ws:-
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cpe:2.3:h:cisco:asr1002-hx:-
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cpe:2.3:h:cisco:asr1002-x-rf:-
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cpe:2.3:h:cisco:asr1002-x-ws:-
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cpe:2.3:h:cisco:asr1002-x:-
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cpe:2.3:h:cisco:asr_1000-x:-
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cpe:2.3:h:cisco:asr_1001-x:-
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cpe:2.3:h:cisco:asr_1001:-
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cpe:2.3:h:cisco:asr_1002-x:-
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cpe:2.3:h:cisco:asr_1002:-
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cpe:2.3:h:cisco:asr_1004:-
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cpe:2.3:h:cisco:asr_1006:-
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cpe:2.3:h:cisco:asr_1013:-
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cpe:2.3:h:cisco:csr1000v:-
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cpe:2.3:o:cisco:ios_xe:15.1(4)m