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CVE-2018-0159

HIGH
7.5
CVSS Score
Published: March 28, 2018 at 10:00 PM UTC
Updated: June 17, 2026 at 01:29 AM UTC
14 products affected across 1 vendorIOSIOS XeAsr 901-6Cz-F-D

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Severity
HIGH7.5
Exploitation
CISA KEV
Exploit prediction
EPSS 7%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score6.9%

EPSS (Exploit Prediction Scoring System) estimates a 6.9% chance this CVE is exploited in the wild within the next 30 days — higher than 94% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial-of-service (DoS) condition.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Mar 3, 2022
Remediation Due
Mar 17, 2022
1686 days overdue
Notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0159

Description

A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of specific IKEv1 packets. An attacker could exploit this vulnerability by sending crafted IKEv1 packets to an affected device during an IKE negotiation. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuj73916.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

IOS· Cisconpm
95%
15.3(3)s
cisco-asr-901-12c-f-d (environment) · cisco-asr-901-12c-ft-d (environment) · cisco-asr-901-4c-f-d (environment) · cisco-asr-901-4c-ft-d (environment) · cisco-asr-901-6cz-f-a (environment) · cisco-asr-901-6cz-f-d (environment) · cisco-asr-901-6cz-ft-a (environment) · cisco-asr-901-6cz-ft-d (environment) · cisco-me-3600x-24cx-m (environment) · cisco-me-3600x-24fs-m (environment) · cisco-me-3600x-24ts-m (environment) · cisco-me-3800x-24fs-m (environment)
IOS Xe· Cisco
95%
15.3(3)s
cisco-asr-901-12c-f-d (environment) · cisco-asr-901-12c-ft-d (environment) · cisco-asr-901-4c-f-d (environment) · cisco-asr-901-4c-ft-d (environment) · cisco-asr-901-6cz-f-a (environment) · cisco-asr-901-6cz-f-d (environment) · cisco-asr-901-6cz-ft-a (environment) · cisco-asr-901-6cz-ft-d (environment) · cisco-me-3600x-24cx-m (environment) · cisco-me-3600x-24fs-m (environment) · cisco-me-3600x-24ts-m (environment) · cisco-me-3800x-24fs-m (environment)
Asr 901-12C-F-D· Ciscodevice
80%
All versions
Asr 901-12C-Ft-D· Ciscodevice
80%
All versions
Asr 901-4C-F-D· Ciscodevice
80%
All versions
Asr 901-4C-Ft-D· Ciscodevice
80%
All versions
Asr 901-6Cz-F-A· Ciscodevice
80%
All versions
Asr 901-6Cz-F-D· Ciscodevice
80%
All versions
Asr 901-6Cz-Ft-A· Ciscodevice
80%
All versions
Asr 901-6Cz-Ft-D· Ciscodevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

VDB Entryx_refsource_BIDBroken LinkThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/103562
VDB Entryx_refsource_SECTRACKBroken LinkThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1040595
x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike-dos
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0159

SSVC — Action Prioritization

SSVCActiveAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20NVD-CWE-noinfo

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