CVE-2017-3856

Summary

CVECVE-2017-3856
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-03-22 19:59:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionA vulnerability in the web user interface of Cisco IOS XE 3.1 through 3.17 could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient resource handling by the affected software when the web user interface is under a high load. An attacker could exploit this vulnerability by sending a high number of requests to the web user interface of the affected software. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. To exploit this vulnerability, the attacker must have access to the management interface of the affected software, which is typically connected to a restricted management network. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software, if the web user interface of the software is enabled. By default, the web user interface is not enabled. Cisco Bug IDs: CSCup70353.

Risk And Classification

Primary CVSS: v3.0 7.5 HIGH from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-399 | CWE-400 | CWE-399 CWE-399 Denial of Service Vulnerability


VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary7.8AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Cisco Ios Xe 3.1.0s All All All
Operating System Cisco Ios Xe 3.1.0sg All All All
Operating System Cisco Ios Xe 3.1.1s All All All
Operating System Cisco Ios Xe 3.1.1sg All All All
Operating System Cisco Ios Xe 3.1.2s All All All
Operating System Cisco Ios Xe 3.1.3as All All All
Operating System Cisco Ios Xe 3.1.3s All All All
Operating System Cisco Ios Xe 3.1.4as All All All
Operating System Cisco Ios Xe 3.1.4s All All All
Operating System Cisco Ios Xe 3.10.0s All All All
Operating System Cisco Ios Xe 3.10.1s All All All
Operating System Cisco Ios Xe 3.10.1xbs All All All
Operating System Cisco Ios Xe 3.10.2s All All All
Operating System Cisco Ios Xe 3.10.2ts All All All
Operating System Cisco Ios Xe 3.10.3s All All All
Operating System Cisco Ios Xe 3.10.4s All All All
Operating System Cisco Ios Xe 3.10.5s All All All
Operating System Cisco Ios Xe 3.10.6s All All All
Operating System Cisco Ios Xe 3.10.7s All All All
Operating System Cisco Ios Xe 3.10.8s All All All
Operating System Cisco Ios Xe 3.10s All All All
Operating System Cisco Ios Xe 3.11.0s All All All
Operating System Cisco Ios Xe 3.11.1s All All All
Operating System Cisco Ios Xe 3.11.2s All All All
Operating System Cisco Ios Xe 3.11.3s All All All
Operating System Cisco Ios Xe 3.11.4s All All All
Operating System Cisco Ios Xe 3.11s All All All
Operating System Cisco Ios Xe 3.12.0as All All All
Operating System Cisco Ios Xe 3.12.0s All All All
Operating System Cisco Ios Xe 3.12.1s All All All
Operating System Cisco Ios Xe 3.12.2s All All All
Operating System Cisco Ios Xe 3.12.3s All All All
Operating System Cisco Ios Xe 3.12.4s All All All
Operating System Cisco Ios Xe 3.12s All All All
Operating System Cisco Ios Xe 3.13.0as All All All
Operating System Cisco Ios Xe 3.13.0s All All All
Operating System Cisco Ios Xe 3.13.1s All All All
Operating System Cisco Ios Xe 3.13.2as All All All
Operating System Cisco Ios Xe 3.13.2s All All All
Operating System Cisco Ios Xe 3.13.3s All All All
Operating System Cisco Ios Xe 3.13.4s All All All
Operating System Cisco Ios Xe 3.13s All All All
Operating System Cisco Ios Xe 3.14.0s All All All
Operating System Cisco Ios Xe 3.14.1s All All All
Operating System Cisco Ios Xe 3.14.2s All All All
Operating System Cisco Ios Xe 3.14.3s All All All
Operating System Cisco Ios Xe 3.14.4s All All All
Operating System Cisco Ios Xe 3.14s All All All
Operating System Cisco Ios Xe 3.15.0s All All All
Operating System Cisco Ios Xe 3.15.1cs All All All
Operating System Cisco Ios Xe 3.15.1s All All All
Operating System Cisco Ios Xe 3.15.2s All All All
Operating System Cisco Ios Xe 3.15.3s All All All
Operating System Cisco Ios Xe 3.15s All All All
Operating System Cisco Ios Xe 3.16.0cs All All All
Operating System Cisco Ios Xe 3.16.0s All All All
Operating System Cisco Ios Xe 3.16.1as All All All
Operating System Cisco Ios Xe 3.16.1s All All All
Operating System Cisco Ios Xe 3.16s All All All
Operating System Cisco Ios Xe 3.17.0s All All All
Operating System Cisco Ios Xe 3.17.1as All All All
Operating System Cisco Ios Xe 3.17.1s All All All
Operating System Cisco Ios Xe 3.17.2s All All All
Operating System Cisco Ios Xe 3.17.3s All All All
Operating System Cisco Ios Xe 3.17s All All All
Operating System Cisco Ios Xe 3.1s All All All
Operating System Cisco Ios Xe 3.1sg All All All
Operating System Cisco Ios Xe 3.2.0ja All All All
Operating System Cisco Ios Xe 3.2.0se All All All
Operating System Cisco Ios Xe 3.2.0sg All All All
Operating System Cisco Ios Xe 3.2.0xo All All All
Operating System Cisco Ios Xe 3.2.11sg All All All
Operating System Cisco Ios Xe 3.2.1s All All All
Operating System Cisco Ios Xe 3.2.1se All All All
Operating System Cisco Ios Xe 3.2.1sg All All All
Operating System Cisco Ios Xe 3.2.1xo All All All
Operating System Cisco Ios Xe 3.2.2s All All All
Operating System Cisco Ios Xe 3.2.2se All All All
Operating System Cisco Ios Xe 3.2.2sg All All All
Operating System Cisco Ios Xe 3.2.3se All All All
Operating System Cisco Ios Xe 3.2.3sg All All All
Operating System Cisco Ios Xe 3.2.4sg All All All
Operating System Cisco Ios Xe 3.2.5sg All All All
Operating System Cisco Ios Xe 3.2.6sg All All All
Operating System Cisco Ios Xe 3.2.7sg All All All
Operating System Cisco Ios Xe 3.2.8sg All All All
Operating System Cisco Ios Xe 3.2.9sg All All All
Operating System Cisco Ios Xe 3.2ja All All All
Operating System Cisco Ios Xe 3.2s All All All
Operating System Cisco Ios Xe 3.2se All All All
Operating System Cisco Ios Xe 3.2sg All All All
Operating System Cisco Ios Xe 3.2xo All All All
Operating System Cisco Ios Xe 3.3.0s All All All
Operating System Cisco Ios Xe 3.3.0se All All All
Operating System Cisco Ios Xe 3.3.0sg All All All
Operating System Cisco Ios Xe 3.3.0sq All All All
Operating System Cisco Ios Xe 3.3.0xo All All All
Operating System Cisco Ios Xe 3.3.1s All All All
Operating System Cisco Ios Xe 3.3.1se All All All
Operating System Cisco Ios Xe 3.3.1sg All All All
Operating System Cisco Ios Xe 3.3.1sq All All All
Operating System Cisco Ios Xe 3.3.1xo All All All
Operating System Cisco Ios Xe 3.3.2s All All All
Operating System Cisco Ios Xe 3.3.2se All All All
Operating System Cisco Ios Xe 3.3.2sg All All All
Operating System Cisco Ios Xe 3.3.2xo All All All
Operating System Cisco Ios Xe 3.3.3se All All All
Operating System Cisco Ios Xe 3.3.4se All All All
Operating System Cisco Ios Xe 3.3.5se All All All
Operating System Cisco Ios Xe 3.3s All All All
Operating System Cisco Ios Xe 3.3se All All All
Operating System Cisco Ios Xe 3.3sg All All All
Operating System Cisco Ios Xe 3.3sq All All All
Operating System Cisco Ios Xe 3.3xo All All All
Operating System Cisco Ios Xe 3.4.0as All All All
Operating System Cisco Ios Xe 3.4.0s All All All
Operating System Cisco Ios Xe 3.4.0sg All All All
Operating System Cisco Ios Xe 3.4.0sq All All All
Operating System Cisco Ios Xe 3.4.1s All All All
Operating System Cisco Ios Xe 3.4.1sg All All All
Operating System Cisco Ios Xe 3.4.1sq All All All
Operating System Cisco Ios Xe 3.4.2s All All All
Operating System Cisco Ios Xe 3.4.2sg All All All
Operating System Cisco Ios Xe 3.4.3s All All All
Operating System Cisco Ios Xe 3.4.3sg All All All
Operating System Cisco Ios Xe 3.4.4s All All All
Operating System Cisco Ios Xe 3.4.4sg All All All
Operating System Cisco Ios Xe 3.4.5s All All All
Operating System Cisco Ios Xe 3.4.5sg All All All
Operating System Cisco Ios Xe 3.4.6s All All All
Operating System Cisco Ios Xe 3.4.6sg All All All
Operating System Cisco Ios Xe 3.4.7sg All All All
Operating System Cisco Ios Xe 3.4.8sg All All All
Operating System Cisco Ios Xe 3.4s All All All
Operating System Cisco Ios Xe 3.4sg All All All
Operating System Cisco Ios Xe 3.4sq All All All
Operating System Cisco Ios Xe 3.5.0e All All All
Operating System Cisco Ios Xe 3.5.0s All All All
Operating System Cisco Ios Xe 3.5.0sq All All All
Operating System Cisco Ios Xe 3.5.1e All All All
Operating System Cisco Ios Xe 3.5.1s All All All
Operating System Cisco Ios Xe 3.5.1sq All All All
Operating System Cisco Ios Xe 3.5.2e All All All
Operating System Cisco Ios Xe 3.5.2s All All All
Operating System Cisco Ios Xe 3.5.2sq All All All
Operating System Cisco Ios Xe 3.5.3e All All All
Operating System Cisco Ios Xe 3.5.3sq All All All
Operating System Cisco Ios Xe 3.5.4sq All All All
Operating System Cisco Ios Xe 3.5.5sq All All All
Operating System Cisco Ios Xe 3.5e All All All
Operating System Cisco Ios Xe 3.5s All All All
Operating System Cisco Ios Xe 3.5sq All All All
Operating System Cisco Ios Xe 3.6.0e All All All
Operating System Cisco Ios Xe 3.6.0s All All All
Operating System Cisco Ios Xe 3.6.1e All All All
Operating System Cisco Ios Xe 3.6.1s All All All
Operating System Cisco Ios Xe 3.6.2ae All All All
Operating System Cisco Ios Xe 3.6.2s All All All
Operating System Cisco Ios Xe 3.6.3e All All All
Operating System Cisco Ios Xe 3.6.4e All All All
Operating System Cisco Ios Xe 3.6.5ae All All All
Operating System Cisco Ios Xe 3.6.5be All All All
Operating System Cisco Ios Xe 3.6.5e All All All
Operating System Cisco Ios Xe 3.6e All All All
Operating System Cisco Ios Xe 3.6s All All All
Operating System Cisco Ios Xe 3.7.0bs All All All
Operating System Cisco Ios Xe 3.7.0e All All All
Operating System Cisco Ios Xe 3.7.0s All All All
Operating System Cisco Ios Xe 3.7.1e All All All
Operating System Cisco Ios Xe 3.7.1s All All All
Operating System Cisco Ios Xe 3.7.2e All All All
Operating System Cisco Ios Xe 3.7.2s All All All
Operating System Cisco Ios Xe 3.7.2ts All All All
Operating System Cisco Ios Xe 3.7.3e All All All
Operating System Cisco Ios Xe 3.7.3s All All All
Operating System Cisco Ios Xe 3.7.4e All All All
Operating System Cisco Ios Xe 3.7.4s All All All
Operating System Cisco Ios Xe 3.7.5s All All All
Operating System Cisco Ios Xe 3.7.6s All All All
Operating System Cisco Ios Xe 3.7.7s All All All
Operating System Cisco Ios Xe 3.7e All All All
Operating System Cisco Ios Xe 3.7s All All All
Operating System Cisco Ios Xe 3.8.0e All All All
Operating System Cisco Ios Xe 3.8.0ex All All All
Operating System Cisco Ios Xe 3.8.0s All All All
Operating System Cisco Ios Xe 3.8.1e All All All
Operating System Cisco Ios Xe 3.8.1s All All All
Operating System Cisco Ios Xe 3.8.2e All All All
Operating System Cisco Ios Xe 3.8.2s All All All
Operating System Cisco Ios Xe 3.8e All All All
Operating System Cisco Ios Xe 3.8ex All All All
Operating System Cisco Ios Xe 3.8s All All All
Operating System Cisco Ios Xe 3.9.0e All All All
Operating System Cisco Ios Xe 3.9.0s All All All
Operating System Cisco Ios Xe 3.9.1s All All All
Operating System Cisco Ios Xe 3.9.2s All All All
Operating System Cisco Ios Xe 3.9e All All All
Operating System Cisco Ios Xe 3.9s All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Cisco IOS XE affected Cisco IOS XE Not specified

References

ReferenceSourceLinkTags
Cisco IOS XE Software Web User Interface Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
Cisco IOS XE Web Interface Resource Handling Flaw Lets Remote Users Cause the Target System to Reload - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Cisco IOS XE Software CVE-2017-3856 Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report