TI-2026-26163 Aliases CVE-2026-33786 GHSA-xh4h-63x5-gr2f

Junos OS: SRX1600, SRX2300, SRX4300: When a specific show command is executed chassisd crashes

LOW 29CWE-754Published 2026-04-09 · Updated 2026-04-13

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1600, SRX2300 and SRX4300 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 SRX1600, SRX2300 and SRX4300: * 24.4 versions before 24.4R1-S3, 24.4R2. This issue does not affect Junos OS versions before 24.4R1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00097 0th percentileScored 2026-11-07

Fix Fixed Junos OS (Juniper Networks): 24.4R1-S3, 24.4R2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Juniper	Junos OS	24.4 to before 24.4R1-S3, 24.4R2	24.4R1-S3, 24.4R2	Patch available	CNA

Junos OS VendorJuniper Affected 24.4 to before 24.4R1-S3, 24.4R2 Fixed in 24.4R1-S3, 24.4R2 Patch available CNA

CPE configurations NVD · 7

CPE	Versions	Role	Vendor
cpe:2.3:o:juniper:junos:24.4:-::::::	24.4	Vulnerable	Juniper
cpe:2.3:o:juniper:junos:24.4:r1::::::	24.4 r1	Vulnerable	Juniper
cpe:2.3:o:juniper:junos:24.4:r1-s2::::::	24.4 r1-s2	Vulnerable	Juniper
cpe:2.3:o:juniper:junos:24.4:r2::::::	24.4 r2	Vulnerable	Juniper
cpe:2.3:h:juniper:srx1600:-:::::::*	not specified by NVD	Running on	Juniper
cpe:2.3:h:juniper:srx2300:-:::::::*	not specified by NVD	Running on	Juniper
cpe:2.3:h:juniper:srx4300:-:::::::*	not specified by NVD	Running on	Juniper

cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:* Versions 24.4 Vulnerable ·Juniper
cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:* Versions 24.4 r1 Vulnerable ·Juniper
cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:* Versions 24.4 r1-s2 Vulnerable ·Juniper
cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:* Versions 24.4 r2 Vulnerable ·Juniper
cpe:2.3:h:juniper:srx1600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
cpe:2.3:h:juniper:srx2300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
cpe:2.3:h:juniper:srx4300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper

Remediation

Fix · CNA Junos OS (Juniper Networks) Fixed in 24.4R1-S3, 24.4R2

Timeline

2026-10-02 Threatist record created from CVE-2026-33786
2026-10-03 Alias added: GHSA-xh4h-63x5-gr2f

References

Advisory 1

https://kb.juniper.net/JSA107810

TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3

See all 792 →

Sources

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