Privilege escalation in Cisco 1100 Integrated Services Router

CVE-2021-1371

A vulnerability in the role-based access control of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker with read-only privileges to obtain administrative privileges by using the console port when the device is in the default SD-WAN configuration. This vulnerability occurs because the default configuration is applied for console authentication and authorization. An attacker could exploit this vulnerability by connecting to the console port and authenticating as a read-only user. A successful exploit could allow a user with read-only permissions to access administrative privileges.

Vulnerability class: Privilege Escalation

EPSS: 0.003 (17.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-1371?
CVE-2021-1371 is a medium-severity vulnerability in Cisco 1100 Integrated Services Router, classified under Improper Privilege Management. CVSS score: 6.6/10. Published 2021-03-24.
How severe is CVE-2021-1371?
Medium severity. CVSS v3 base score is 6.6 out of 10.