SB2026031632 - Multiple vulnerabilities in Cisco IOS XR Software

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026031632

SB2026031632 - Multiple vulnerabilities in Cisco IOS XR Software

Published: March 16, 2026

Security Bulletin ID SB2026031632
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) OS Command Injection (CVE-ID: CVE-2026-20040)

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the CLI. A local user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2026-20046)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect mapping of a command to task groups within the source code, which leads to security restrictions bypass and privilege escalation.


Remediation

Install update from vendor's website.

References