What is CVE-2017-12236?

CVE-2017-12236 is a critical-severity vulnerability in Cisco Ios_xe, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-09-29.

How severe is CVE-2017-12236?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Cisco Ios_xe

CVE-2017-12236

A vulnerability in the implementation of the Locator/ID Separation Protocol (LISP) in Cisco IOS XE 3.2 through 16.5 could allow an unauthenticated, remote attacker using an x tunnel router to bypass authentication checks performed when reg…

Vulnerability class: Broken Authentication

EPSS: 0.033 (87.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cisco Ios_xe — versions 3.2.0ja, 3.9.1e, 16.5.1c
N/a Cisco Ios Xe — versions Cisco IOS XE

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
psirt@cisco.com (x_refsource_CONFIRM, Vendor Advisory)
psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)

Frequently asked questions

What is CVE-2017-12236?: CVE-2017-12236 is a critical-severity vulnerability in Cisco Ios_xe, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-09-29.
How severe is CVE-2017-12236?: Critical severity. CVSS v3 base score is 9.8 out of 10.