CVE-2021-1371

Cisco IOS XE SD-WAN Software Console Privilege Escalation Vulnerability

At a glance

Severity
MEDIUM 6.6
EPSS
EPSS 0.26 % · percentile 18 (2026-10-28)
State
PUBLISHED
Published
Updated
Assigner
cisco
NVD status
Modified

Description

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.

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 6.6CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hcisco
CVSS 3.1MEDIUM 6.6CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · psirt@cisco.com (Secondary)
CVSS 3.1MEDIUM 6.6CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)
CVSS 2.0HIGH 7.2AV:L/AC:L/Au:N/C:C/I:C/A:CNVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Cisco · Cisco IOS XE Softwareaffected n/a

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD