Vulnerability Intelligence Report
Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability
CVE-2018-0158
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device to be processed. A successful exploit could cause an affected device to continuously consume memory and eventually reload, resulting in a DoS condition. Cisco Bug IDs: CSCvf22394.
CISA KEV
SSVC: Active Exploitation
Automatable
CVSS Base Score
8.6
HIGH
Exploitability:3.9
Impact Score:4.0
EPSS Probability:7.19%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-20 ↗CWE-20
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| cisco | ios | 15.5\(3\)s1.1, 15.5\(3\)s1.2, 15.5\(3\)s1.4, 15.5\(3\)s1.5, 15.5\(3\)s1.7, 15.5\(3\)s1.8, 15.5\(3\)s1.9, 15.5\(3\)s1.10, 15.5\(3\)s1.11, 15.5\(3\)s1.12 |
| cisco | asr_1001-hx | all |
| cisco | asr_1001-x | all |
| cisco | asr_1002-hx | all |
| cisco | asr_1002-x | all |
| cisco | asr_1004 | all |
| cisco | asr_1006 | all |
| cisco | asr_1006-x | all |
| cisco | asr_1009-x | all |
| cisco | asr_1013 | all |
| cisco | ios_xe | 15.5\(3\)s1.1, 15.5\(3\)s1.2, 15.5\(3\)s1.4, 15.5\(3\)s1.5, 15.5\(3\)s1.7, 15.5\(3\)s1.8, 15.5\(3\)s1.9, 15.5\(3\)s1.10, 15.5\(3\)s1.11, 15.5\(3\)s1.12 |
| rockwellautomation | allen-bradley_stratix_5900 | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Cisco Systems, Inc. · Hosted Service · USA |
| Reserved | 2017-11-27T00:00:00 |
| Published | 2018-03-28T22:00:00 |
| Patch Date | 2018-03-28 |
| Last Updated | 2026-01-12T21:54:43 |
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