Vulnerability in Cisco 4431 Integrated Services Router

CVE-2018-0150

A vulnerability in Cisco IOS XE Software could allow an unauthenticated, remote attacker to log in to a device running an affected release of Cisco IOS XE Software with the default username and password that are used at initial boot, aka a Static Credential Vulnerability. The vulnerability is due to an undocumented user account with privilege level 15 that has a default username and password. An attacker could exploit this vulnerability by using this account to remotely connect to an affected device. A successful exploit could allow the attacker to log in to the device with privilege level 15 access. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software Release 16.x. This vulnerability does not affect Cisco IOS XE Software releases prior to Release 16.x. Cisco Bug IDs: CSCve89880.

EPSS: 0.048 (91.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

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

Frequently asked questions

What is CVE-2018-0150?
CVE-2018-0150 is a critical-severity vulnerability in Cisco 4431 Integrated Services Router, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2018-03-28.
How severe is CVE-2018-0150?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-0150 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.