SB2026012058 - Improper handling of exceptional conditions in Juniper Junos OS
Published: January 20, 2026
Security Bulletin ID
SB2026012058
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper handling of exceptional conditions (CVE-ID: CVE-2026-0203)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper handling of exceptional conditions error in packet processing. A remote non-authenticated attacker can cause an FPC to crash and restart, resulting in a Denial of Service (DoS).
Remediation
Install update from vendor's website.