CVE-2021-1281 - CVE House
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Status published Medium CVE-2021-1281

Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability

Vulnerability Description

A vulnerability in CLI management in Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system as the root user. This vulnerability is due to the way the software handles concurrent CLI sessions. An attacker could exploit this vulnerability by authenticating to the device as an administrative user and executing a sequence of commands. A successful exploit could allow the attacker to obtain access to the underlying operating system as the root user.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Cisco IOS XE Software
Vulnerable Versions:
Unknown

Timeline

Official Publish: March 24th, 2021
Last Modified: November 8th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N

Weaknesses (CWE)

CWE-399

MITRE ATT&CK TTPs

T1499.001 OS Exhaustion Flood
Impact
T1499.002 Service Exhaustion Flood
Impact
T1499.003 Application Exhaustion Flood
Impact
T1499.004 Application or System Exploitation
Impact