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CVE-2020-3511 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.4 HIGHVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CNA: [email protected]CVSS-B:7.4 HIGHVector:CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf	CVE	Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	[email protected]
CWE-20	Improper Input Validation	[email protected]

Affected Products

Product	Versions
cisco ios xe	15.1(4)m
CPE cpe:2.3:o:cisco:ios_xe:15.1(4)m:::::::* Remediation No remediation found in references.
cisco 1100-4g integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-4g_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100-4gltegb integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-4gltegb_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100-4gltena integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-4gltena_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100-4p integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100-6g integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-6g_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100-8p integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100-lte integrated services router	All versions
CPE cpe:2.3:h:cisco:1100-lte_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1100 integrated services router	All versions
CPE cpe:2.3:h:cisco:1100_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1101-4p integrated services router	All versions
CPE cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1101 integrated services router	All versions
CPE cpe:2.3:h:cisco:1101_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1109-2p integrated services router	All versions
CPE cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1109-4p integrated services router	All versions
CPE cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1109 integrated services router	All versions
CPE cpe:2.3:h:cisco:1109_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1111x-8p integrated services router	All versions
CPE cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1111x integrated services router	All versions
CPE cpe:2.3:h:cisco:1111x_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 111x integrated services router	All versions
CPE cpe:2.3:h:cisco:111x_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1120 integrated services router	All versions
CPE cpe:2.3:h:cisco:1120_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 1160 integrated services router	All versions
CPE cpe:2.3:h:cisco:1160_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 422 integrated services router	All versions
CPE cpe:2.3:h:cisco:422_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4321/k9-rf integrated services router	All versions
CPE cpe:2.3:h:cisco:4321/k9-rf_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4321/k9-ws integrated services router	All versions
CPE cpe:2.3:h:cisco:4321/k9-ws_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4321/k9 integrated services router	All versions
CPE cpe:2.3:h:cisco:4321/k9_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4331/k9-rf integrated services router	All versions
CPE cpe:2.3:h:cisco:4331/k9-rf_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4331/k9-ws integrated services router	All versions
CPE cpe:2.3:h:cisco:4331/k9-ws_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4331/k9 integrated services router	All versions
CPE cpe:2.3:h:cisco:4331/k9_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4351/k9-rf integrated services router	All versions
CPE cpe:2.3:h:cisco:4351/k9-rf_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4351/k9-ws integrated services router	All versions
CPE cpe:2.3:h:cisco:4351/k9-ws_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4351/k9 integrated services router	All versions
CPE cpe:2.3:h:cisco:4351/k9_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4431 integrated services router	All versions
CPE cpe:2.3:h:cisco:4431_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco 4461 integrated services router	All versions
CPE cpe:2.3:h:cisco:4461_integrated_services_router:-:::::::* Remediation No remediation found in references.
cisco asr 1000-x	All versions
CPE cpe:2.3:h:cisco:asr_1000-x:-:::::::* Remediation No remediation found in references.
cisco asr 1001	All versions
CPE cpe:2.3:h:cisco:asr_1001:-:::::::* Remediation No remediation found in references.
cisco asr 1001-x	All versions
CPE cpe:2.3:h:cisco:asr_1001-x:-:::::::* Remediation No remediation found in references.
cisco asr 1002	All versions
CPE cpe:2.3:h:cisco:asr_1002:-:::::::* Remediation No remediation found in references.
cisco asr 1002-x	All versions
CPE cpe:2.3:h:cisco:asr_1002-x:-:::::::* Remediation No remediation found in references.
cisco asr 1004	All versions
CPE cpe:2.3:h:cisco:asr_1004:-:::::::* Remediation No remediation found in references.
cisco asr 1006	All versions
CPE cpe:2.3:h:cisco:asr_1006:-:::::::* Remediation No remediation found in references.
cisco asr 1013	All versions
CPE cpe:2.3:h:cisco:asr_1013:-:::::::* Remediation No remediation found in references.
cisco asr1001-hx	All versions
CPE cpe:2.3:h:cisco:asr1001-hx:-:::::::* Remediation No remediation found in references.
cisco asr1001-hx-rf	All versions
CPE cpe:2.3:h:cisco:asr1001-hx-rf:-:::::::* Remediation No remediation found in references.
cisco asr1001-x	All versions
CPE cpe:2.3:h:cisco:asr1001-x:-:::::::* Remediation No remediation found in references.
cisco asr1001-x-rf	All versions
CPE cpe:2.3:h:cisco:asr1001-x-rf:-:::::::* Remediation No remediation found in references.
cisco asr1001-x-ws	All versions
CPE cpe:2.3:h:cisco:asr1001-x-ws:-:::::::* Remediation No remediation found in references.
cisco asr1002-hx	All versions
CPE cpe:2.3:h:cisco:asr1002-hx:-:::::::* Remediation No remediation found in references.
cisco asr1002-hx-rf	All versions
CPE cpe:2.3:h:cisco:asr1002-hx-rf:-:::::::* Remediation No remediation found in references.
cisco asr1002-hx-ws	All versions
CPE cpe:2.3:h:cisco:asr1002-hx-ws:-:::::::* Remediation No remediation found in references.
cisco asr1002-x	All versions
CPE cpe:2.3:h:cisco:asr1002-x:-:::::::* Remediation No remediation found in references.
cisco asr1002-x-rf	All versions
CPE cpe:2.3:h:cisco:asr1002-x-rf:-:::::::* Remediation No remediation found in references.
cisco asr1002-x-ws	All versions
CPE cpe:2.3:h:cisco:asr1002-x-ws:-:::::::* Remediation No remediation found in references.
cisco csr1000v	All versions
CPE cpe:2.3:h:cisco:csr1000v:-:::::::* Remediation No remediation found in references.

Change History

35 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 23, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
May 22, 2023	CPE Deprecation Remap	[email protected]
Oct 8, 2020	Initial Analysis	[email protected]

CVE-2020-3511 Details

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