What is CVE-2021-1128?

CVE-2021-1128 is a medium-severity vulnerability in Cisco iOS Xr Software, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 5.5/10. Published 2021-02-04.

How severe is CVE-2021-1128?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Cisco iOS Xr Software

CVE-2021-1128

A vulnerability in the CLI parser of Cisco IOS XR Software could allow an authenticated, local attacker to view more information than their privileges allow. The vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker could exploit this vulnerability by using a specific command at the command line. A successful exploit could allow the attacker to obtain sensitive information within the configuration that otherwise might not have been accessible beyond the privileges of the invoking user.

EPSS: 0.003 (26.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Cisco Ios Xr Software — versions n/a
Cisco Ios_xr — versions 7.2.0, 7.3.0

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2021-1128?: CVE-2021-1128 is a medium-severity vulnerability in Cisco iOS Xr Software, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 5.5/10. Published 2021-02-04.
How severe is CVE-2021-1128?: Medium severity. CVSS v3 base score is 5.5 out of 10.