CVE-2018-0163
MEDIUM
6.5
CVSS Score
Published: March 28, 2018 at 10:00 PM UTC
Updated: June 17, 2026 at 01:29 AM UTC
95 products affected across 1 vendorIOS1921 Integrated Services Router1941 Integrated Services Router· also runs on 1 platform
Using Cisco IOS by N/A?
Get instant alerts when new vulnerabilities affect Cisco IOS - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit
Description
A vulnerability in the 802.1x multiple-authentication (multi-auth) feature of Cisco IOS Software could allow an unauthenticated, adjacent attacker to bypass the authentication phase on an 802.1x multi-auth port. The vulnerability is due to a logic change error introduced into the code. An attacker could exploit this vulnerability by trying to access an 802.1x multi-auth port after a successful supplicant has authenticated. An exploit could allow the attacker to bypass the 802.1x access controls and obtain access to the network. Cisco Bug IDs: CSCvg69701.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
15.4(3)m615.4(3)m6a15.4(3)m715.4(3)m7a15.4(3)m815.4(3.0i)m615.5(3)m315.5(3)m415.5(3)m4a15.5(3)m4b15.5(3)m4c15.5(3)m515.5(3)m5a15.5(3)m615.5(3)m6a15.6(1)t215.6(1)t315.6(2)t115.6(2)t215.6(2)t315.6(3)m15.6(3)m0a15.6(3)m115.6(3)m1a15.6(3)m1b15.6(3)m215.6(3)m2a15.6(3)m315.6(3)m3a15.7(3)m15.7(3)m0a15.7(3)m115.7(3)m2
cisco-1120-connected-grid-router (environment) · cisco-1240-connected-grid-router (environment) · cisco-1905-serial-integrated-services-router (environment) · cisco-1906c-integrated-services-router (environment) · cisco-1921-integrated-services-router (environment) · cisco-1941-integrated-services-router (environment) · cisco-1941w-integrated-services-router (environment) · cisco-2010-connected-grid-router (environment) · cisco-2901-integrated-services-router (environment) · cisco-2911-integrated-services-router (environment) · cisco-2911a-integrated-services-router (environment) · cisco-2921-integrated-services-router (environment) · cisco-2951-integrated-services-router (environment) · cisco-3925-integrated-services-router (environment) · cisco-3925e-integrated-services-router (environment) · cisco-3945-integrated-services-router (environment) · cisco-3945e-integrated-services-router (environment) · cisco-5915-embedded-service-router (environment) · cisco-5921-embedded-services-router (environment) · cisco-5940-embedded-services-router (environment) · cisco-800-series-routers (environment) · cisco-800m-integrated-services-router (environment) · cisco-809-industrial-integrated-services-router (environment) · cisco-812-3g-integrated-services-router (environment) · cisco-812-cifi-integrated-services-router (environment) · cisco-819-hardened-3g (environment) · cisco-819-hardened-dual-radio-802-11n-wifi-integrated-services-router (environment) · cisco-819-hardened-integrated-services-router (environment) · cisco-819-integrated-services-router (environment) · cisco-819-non-hardened-4g-lte-m2m (environment) · cisco-819-non-hardened-secure-multi-mode-4g-lte-m2m-isr-router (environment) · cisco-829-industrial-integrated-services-router (environment) · cisco-860vae-w-integrated-services-router (environment) · cisco-861-integrated-services-router (environment) · cisco-861w-integrated-services-router (environment) · cisco-866vae-integrated-services-router (environment) · cisco-867vae-integrated-services-router (environment) · cisco-880-voice-integrated-services-router (environment) · cisco-881-3g (environment) · cisco-881-3g-integrated-services-router (environment) · cisco-881-cube-integrated-services-router (environment) · cisco-881-secure-fast-ethernet (environment) · cisco-881w-integrated-services-router (environment) · cisco-886va-cube-integrated-services-router (environment) · cisco-886va-integrated-services-router (environment) · cisco-886va-w-integrated-services-router (environment) · cisco-886vag-3g-integrated-services-router (environment) · cisco-887-multi-mode-vdsl2-asdl2-pots (environment) · cisco-887va-cube-integrated-services-router (environment) · cisco-887va-integrated-services-router (environment) · cisco-887va-w-integrated-services-router (environment) · cisco-887vag-3g-integrated-services-router (environment) · cisco-887vagw-3g (environment) · cisco-887vam-w-integrated-services-router (environment) · cisco-887vamg-3g-integrated-services-router (environment) · cisco-888-cube-integrated-services-router (environment) · cisco-888-integrated-services-router (environment) · cisco-888e-cube-integrated-services-router (environment) · cisco-888e-integrated-services-router (environment) · cisco-888eg-3g-integrated-services-router (environment) · cisco-888w-integrated-services-router (environment) · cisco-891-24x-integrated-services-router (environment) · cisco-891-integrated-services-router (environment) · cisco-891w-integrated-services-router (environment) · cisco-892-integrated-services-router (environment) · cisco-892f-cube-integrated-services-router (environment) · cisco-892w-integrated-services-router (environment) · cisco-896-multi-mode-vdsl2-adsl2-isdn (environment) · cisco-897-multi-mode-vdsl2-adsl2-pots (environment) · cisco-897-multi-mode-vdsl2-adsl2-pots-annex-m (environment) · cisco-898-secure-g-shdsl-efm-atm (environment) · cisco-c866vae-integrated-services-router (environment) · cisco-c867vae-integrated-services-router (environment) · cisco-c881-integrated-services-router (environment) · cisco-c881w-integrated-services-router (environment) · cisco-c886va-integrated-services-routers (environment) · cisco-c886vaj-integrated-services-router (environment) · cisco-c887va-integrated-services-routers (environment) · cisco-c887vam-integrated-services-routers (environment) · cisco-c888-integrated-services-router (environment) · cisco-c888ea-integrated-services-router (environment) · cisco-c891f-integrated-services-routers (environment) · cisco-c891fw-integrated-services-router (environment) · cisco-c892fsp-integrated-services-router (environment) · cisco-c896va-integrated-services-router (environment) · cisco-c897va-integrated-services-router (environment) · cisco-c897va-m-integrated-services-router (environment) · cisco-c897vam-w-integrated-services-router (environment) · cisco-c897vaw-integrated-services-router (environment) · cisco-c898ea-integrated-services-router (environment) · cisco-c899-secure-gigabit-ethernet (environment) · cisco-vg204xm-analog-voice-gateway (environment) · cisco-vg350-analog-voice-gateway (environment) · cisco-vg3x0-analog-voice-gateway (environment) · rockwellautomation-stratix-5900 (environment)
80%
All versions
80%
All versions
All versions
All versions
All versions
All versions
All versions
80%
All versions
All versions
Runs on — not affected
The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/103571x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dot1xSSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- ADJACENT_NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-287
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card