CVE-2016-9203

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Summary

CVECVE-2016-9203
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-12-14 00:59:23 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionA vulnerability in the Internet Key Exchange Version 2 (IKEv2) feature of Cisco ASR 5000 Series Software could allow an unauthenticated, remote attacker to cause a reload of the ipsecmgr process. More Information: CSCvb38398. Known Affected Releases: 20.2.3 20.2.3.65026. Known Fixed Releases: 21.1.M0.65431 21.1.PP0.65733 21.1.R0.65467 21.1.R0.65496 21.1.VC0.65434 21.1.VC0.65489 21.2.A0.65437.

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

EPSS: 0.017920000 probability, percentile 0.828900000 (date 2026-05-11)

Problem Types: CWE-119 | unspecified

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]Primary5AV:N/AC:L/Au:N/C:N/I:N/A:P

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
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco Asr 5000 - All All All
Application Cisco Asr 5000 Series Software 20.0.2.3.65026 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Cisco ASR 5000 affected Cisco ASR 5000 Not specified

References

ReferenceSourceLinkTags
Cisco ASR 5000 Series Router IKEv2 Race Condition Lets Remote Users Cause the Target 'ipsecmgr' Service to Crash - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
Cisco ASR 5000 Series IKEv2 Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
Cisco ASR 5000 Series Software CVE-2016-9203 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
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