CVE-2026-33787

MediumCVSS 5.5/10Last modified Oct 26, 2026

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1500, SRX4100, SRX4200 and SRX4600 allows a local attacker with low privileges to cause a complete Denial of Service (DoS).

When a specific 'show chassis' CLI command is executed, chassisd crashes and restarts which causes a momentary impact to all traffic until all modules are online again.

This issue affects Junos OS on SRX1500, SRX4100, SRX4200 and SRX4600: 

* 23.2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S7 * 24.2 versions before 24.2R2-S2, * 24.4 versions before 24.4R2, * 25.2 versions before 25.2R1-S1, 25.2R2.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-754

Affected software

VendorProductVersions
Juniper NetworksJunos OS< 23.2R2-S6; >= 23.4, < 23.4R2-S7; >= 24.2, < 24.2R2-S2; >= 24.4, < 24.4R2; >= 25.2, < 25.2R1-S1, 25.2R2

References

Timeline

Published
Apr 9, 2026
Last modified
Oct 26, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-337887.8A Missing Authentication for Critical Function vulnerability in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved oCVE-2026-337899.8A Stack-based Buffer Overflow vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows anCVE-2026-33798.8A vulnerability has been found in Tenda F453 1.0.0.3. This vulnerability affects the function fromSetIpBind of the file /goform/SetIpBind. TCVE-2026-337907.5An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on SRX Series CVE-2026-337916.7An OS Command Injection vulnerability in the CLI processing of Juniper Networks Junos OS and Junos OS Evolved allows a local, high-privilegeCVE-2026-337929.8A Stack-based Buffer Overflow vulnerability in the srxpfe process of Juniper Networks Junos OS on SRX Series allows an unauthenticated netwoCVE-2026-337937.8An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows aCVE-2026-337945.9An Improper Check for Unusual or Exceptional Conditions vulnerability in the advanced forwarding toolkit (evo-aftmand) of Juniper NetworCVE-2026-337957.5A Numeric Truncation Error vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated netwCVE-2026-337969.8A Stack-based Buffer Overflow vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a CVE-2026-337977.4An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sCVE-2026-337988.8A Stack-based Buffer Overflow vulnerability in the srxpfe of Juniper Networks Junos OS and Junos OS Evolved on the SRX Series allows an L2-a
CVE-2026-33787: Medium severity, CVSS 5.5 | Vulnix