CVE-2026-33798 vulnerability in Juniper Networks Products
Published on October 14, 2026
Junos OS and Junos OS Evolved: SRX Series: An attacker causes remote code execution when SRX chassis-cluster is enabled
A Stack-based Buffer Overflow vulnerability in the srxpfe of Juniper Networks Junos OS and Junos OS Evolved on the SRX Series allows an L2-adjacent attacker to execute arbitrary code as root via high-availability fabric traffic.
Vulnerability Analysis
Weakness Type
What is a Stack Overflow Vulnerability?
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CVE-2026-33798 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-33798
stack.watch emails you whenever new vulnerabilities are published in Juniper Networks Junos or Juniper Networks Junos Os Evolved. Just hit a watch button to start following.
Affected Versions
Juniper Networks Junos OS:- Before 23.2R2-S7.7 is affected.
- Version 23.4 and below 23.4R2-S8.13 is affected.
- Version 24.2 and below 24.2R2-S5.5 is affected.
- Version 24.4 and below 24.4R2-S5 is affected.
- Version 25.2 and below 25.2R2-S2 is affected.
- Version 25.4 and below 25.4R1-S3 is affected.
- Version 26.2 and below 26.2R1-S2 is affected.
- Before 23.2R2-S7.7-EVO is affected.
- Version 23.4 and below 23.4R2-S8.11-EVO is affected.
- Version 24.2 and below 24.2R2-S5.6-EVO is affected.
- Version 24.4 and below 24.4R2-S5-EVO is affected.
- Version 25.2 and below 25.2R2-S2-EVO is affected.
- Version 25.4 and below 25.4R1-S3-EVO is affected.
- Version 26.2 and below 26.2R1-S2-EVO is affected.
- Version 23.4X100 is affected.
- Version 25.2X100 and below 25.2X100-D35-EVO is affected.
- Version 25.4X300 and below 25.4X300-D40-EVO is affected.