When an affected device initiates a TCP connection to an attacker-controlled system that responds with a specific packet, this causes a PFE crash and restart, which affects all services until the system has automatically recovered.
This issue can happen among others in the following scenarios: ALG, SSL proxy, UTM, RTLOG, AppQoE probing, AAMW, ICAP, URL filtering.
This issue affects Junos OS on MX Series with SPC3, SRX5k Series with SPC3, SRX1600 Series, SRX2300 Series, SRX4000 Series, and vSRX Series:
* all versions before 23.2R2-S4,
* 23.4 versions before 23.4R2-S5,
* 24.2 versions before 24.2R2.
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|---|---|
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Juniper
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Junos
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Mx-spc3
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Mx240
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Mx480
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Mx960
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Srx1600
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Srx2300
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Srx4100
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Srx4120
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Srx4200
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Srx4300
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Srx4600
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Srx4700
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Srx5400
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Srx5600
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Srx5800
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Srx5k-spc3
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Vsrx
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No advisories yet.
Solution
The following software releases have been updated to resolve this specific issue: 22.4R3-S8, 23.2R2-S4, 23.4R2-S5, 24.2R2, 24.4R1, and all subsequent releases.
Workaround
There are no known workarounds for this issue.
| Link | Providers |
|---|---|
| https://supportportal.juniper.net/JSA110082 |
|
Fri, 10 Jul 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 10 Jul 2026 00:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Juniper Networks
Juniper Networks junos Os |
|
| Vendors & Products |
Juniper Networks
Juniper Networks junos Os |
Thu, 09 Jul 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). When an affected device initiates a TCP connection to an attacker-controlled system that responds with a specific packet, this causes a PFE crash and restart, which affects all services until the system has automatically recovered. This issue can happen among others in the following scenarios: ALG, SSL proxy, UTM, RTLOG, AppQoE probing, AAMW, ICAP, URL filtering. This issue affects Junos OS on MX Series with SPC3, SRX5k Series with SPC3, SRX1600 Series, SRX2300 Series, SRX4000 Series, and vSRX Series: * all versions before 23.2R2-S4, * 23.4 versions before 23.4R2-S5, * 24.2 versions before 24.2R2. | |
| Title | Junos OS: MX Series with SPC3, SRX Series: Specific packet in response to a TCP connection establishment by the affected device can crash the PFE | |
| Weaknesses | CWE-754 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: juniper
Published:
Updated: 2026-07-10T14:31:13.320Z
Reserved: 2026-06-23T16:27:00.248Z
Link: CVE-2026-57022
Updated: 2026-07-10T14:31:09.204Z
Status : Analyzed
Published: 2026-07-09T22:17:07.233
Modified: 2026-07-14T16:54:04.857
Link: CVE-2026-57022
No data.
OpenCVE Enrichment
Updated: 2026-08-01T14:00:06Z