Evidence dossier

CVE-2018-0158

CVE-2018-0158

64.9–81.9Priority evidence range

As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State: PUBLISHED
Published: Mar 28, 2018
Updated: Jan 12, 2026
Evidence coverage: 85%

CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS7.33%

2026-07-18 · v2026.06.15 · percentile 93.7%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment

container

CISA ADP Vulnrichment

Jul 19, 2026Original evidence ↗

ciscooriginal assertion

container

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.

Jul 19, 2026Original evidence ↗

CVEderivative copy

container

CVE Program Container

Jul 19, 2026Original evidence ↗

CISA KEVoriginal assertion

observed_exploitation

Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability

Jul 19, 2026Original evidence ↗

FIRST EPSSoriginal assertion

model_probability

Probability 0.073310000000; percentile 0.937000000000

Jul 19, 2026Original evidence ↗

Applicability

Cited product scope

Trace impact →

n/aCisco IOS and IOS XE

[{"status": "affected", "version": "Cisco IOS and IOS XE"}]unknown

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5900:-:*:*:*:*:*:*:*constrained

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.1:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.1:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.10:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.10:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.11:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.11:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.12:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.12:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.2:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.2:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.4:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.4:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.5:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.5:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.7:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.7:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.8:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.8:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.9:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios:15.5\(3\)s1.9:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.1:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.1:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.10:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.10:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.11:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.11:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.12:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.12:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.2:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.2:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.4:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.4:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.5:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.5:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.7:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.7:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.8:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.8:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.9:*:*:*:*:*:*:*supported

Unknown vendorUnknown product

cpe:2.3:o:cisco:ios_xe:15.5\(3\)s1.9:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

8.6

nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

7.8

nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:N/I:N/A:C

8.6

134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

8.6

CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Limitations and unknowns

KEV membership is authoritative for the catalog, not proof of exposure in any environment.
EPSS is a dated model probability and not an individual-environment prediction.
Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
NVD-carried upstream facts remain derivative and are not independent corroboration.
Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.