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High severity7.3NVD Advisory· Published Mar 24, 2021· Updated Jun 17, 2026

CVE-2021-1432

CVE-2021-1432

Description

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system as the root user. The attacker must be authenticated on the affected device as a low-privileged user to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting arbitrary commands to a file as a lower-privileged user. The commands are then executed on the device by the root user. A successful exploit could allow the attacker to execute arbitrary commands as the root user.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

28
  • Cisco Systems, Inc./iOS Xe25 versions
    cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*+ 24 more
    • cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1c:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1t:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1w:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1x:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1y:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1z:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.1za:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.2:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.2a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.2s:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.2t:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.3:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.3a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.3s:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.4:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:16.12.4a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:17.2.1:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:17.2.1a:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:17.2.1r:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:17.2.1v:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:3.15.1xbs:*:*:*:*:*:*:*
    • cpe:2.3:o:cisco:ios_xe:3.15.2xbs:*:*:*:*:*:*:*
  • Cisco Systems, Inc./Ios Xe Sd Wan
    cpe:2.3:o:cisco:ios_xe_sd-wan:*:*:*:*:*:*:*:*
  • Cisco Systems, Inc./IOS XE SD-WAN Softwarellm-fuzzy
  • Cisco Systems, Inc./IOS XE Software for Cisco Merakicpe-rescue
    Range: n/a

Patches

Vulnerability mechanics

References

1

News mentions

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