Junos OS: A specifically crafted 'show chassis' command causes chassisd to crash
Published Jan 15, 2026
6.8
MEDIUMCVSS 4.0
EPSS 0.15%
Description
A NULL Pointer Dereference vulnerability in the chassis daemon (chassisd) of Juniper Networks Junos OS on MX, SRX and EX Series allows a local attacker with low privileges to cause a Denial-of-Service (DoS).
When a user executes the 'show chassis' command with specifically crafted options, chassisd will crash and restart. Due to this all components but the Routing Engine (RE) in the chassis are reinitialized, which leads to a complete service outage, which the system automatically recovers from.
This issue affects:
Junos OS on MX, SRX and EX Series, except MX10000 Series and MX304:
* all versions before 22.4R3-S8, * 23.2 versions before 23.2R2-S5, * 23.4 versions before 23.4R2-S6, * 24.2 versions before 24.2R2-S2, * 24.4 versions before 24.4R2.
Affected products
-
- Version 0StatusaffectedConstraints<22.4R3-S8
- Version 23.2StatusaffectedConstraints<23.2R2-S5
- Version 23.4StatusaffectedConstraints<23.4R2-S6
- Version 24.2StatusaffectedConstraints<24.2R2-S2
- Version 24.4StatusaffectedConstraints<24.4R2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS | unaffected |
|
- < 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 22.4
- 23.2
- 23.2
- 23.2
- 23.2
- 23.2
- 23.2
- 23.2
- 23.2
- 23.2
- 23.4
- 23.4
- 23.4
- 23.4
- 23.4
- 23.4
- 23.4
- 23.4
- 23.4
- 23.4
- 24.2
- 24.2
- 24.2
- 24.2
- 24.2
- 24.2
- 24.4
- 24.4
- 24.4
- 24.4
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No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
The following software releases have been updated to resolve this specific issue: 22.4R3-S8, 23.2R2-S5, 23.4R2-S6, 24.2R2-S2, 24.4R2, 25.2R1, and all subsequent releases.
References (2)
- https://kb.juniper.net/JSA103173 vendor-advisoryVendor Advisory
- https://supportportal.juniper.net/ vendor-advisoryVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://kb.juniper.net/JSA103173 | vendor-advisoryVendor Advisory | |
| https://supportportal.juniper.net/ | vendor-advisoryVendor Advisory |
Change history (0)
No recorded changes yet.