Security readout for executives and security teams
This flaw can make affected Cisco IOS or IOS XE devices reboot when they process malformed IKEv1 VPN negotiation traffic. The business impact is availability loss: VPN gateways, routers, or edge devices may drop traffic during reloads. CISA KEV listing indicates known exploitation, so exposed devices should be prioritized. Organizations using Cisco IOS or IOS XE devices with IKEv1 functionality enabled and reachable from untrusted networks are the likely exposure group. The source bundle does not provide specific version ranges, so affected-release confirmation requires Cisco’s advisory. Treat this as high priority for network and VPN infrastructure. It is not a data-theft bug, but a known-exploited denial-of-service issue that can interrupt connectivity and business operations if exposed devices remain unpatched. Mitigation focus: Review Cisco advisory cisco-sa-20180328-ike-dos for affected releases and fixed software.; Upgrade affected Cisco IOS and IOS XE devices per vendor guidance.; Reduce unnecessary IKEv1 exposure while remediation is scheduled..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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Open ATT&CK lookupCVE-2018-0159 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike-dosCVE reference · x_refsource_CONFIRM
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0159CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.