NVD

CVE-2026-57022 Detail

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.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

Nist CVSS score does not match with CNA score

CNA: Juniper Networks, Inc.

CVSS-B 8.2 HIGH

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A/RE:M

CVSS 3.x Severity and Vector Strings:

CNA: Juniper Networks, Inc.

Base Score: 5.9 MEDIUM

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://supportportal.juniper.net/JSA110082	Juniper Networks, Inc.	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-754	Improper Check for Unusual or Exceptional Conditions	Juniper Networks, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Initial Analysis by NIST 7/14/2026 12:54:04 PM

Action

Type

Old Value

New Value

Added

CPE Configuration

Record truncated, showing 2048 of 2171 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.2:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.2:r2-s3:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:23.4:r2-s4:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* versions up to (excluding) 23.2
     OR
          cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:*
          cpe:2.3:a:juniper:vsrx:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx1600:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx2300:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx4300:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx4700:-:*:*:*:*:*:*:*
          cpe:2.3:h:juniper:srx4120

Added

Reference Type

Juniper Networks, Inc.: https://supportportal.juniper.net/JSA110082 Types: Vendor Advisory

New CVE Received from Juniper Networks, Inc. 7/09/2026 6:17:07 PM

Action	Type	New Value
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.
Added	CVSS V4.0	AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:M/U:X
Added	CVSS V3.1	AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CWE	CWE-754
Added	Reference	https://supportportal.juniper.net/JSA110082
Added	Affected	[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","platforms":["MX Series with SPC3","SRX5k Series with SPC3","SRX1600 Series","SRX2300 Series","SRX4000 Series","vSRX Series"],"versions":[{"version":"0","lessThan":"23.2R2-S4","versionType":"custom","status":"affected"},{"version":"23.4","lessThan":"23.4R2-S5","versionType":"custom","status":"affected"},{"version":"24.2","lessThan":"24.2R2","versionType":"custom","status":"affected"}]}]

Quick Info

CVE Dictionary Entry:
CVE-2026-57022
NVD Published Date:
07/09/2026
NVD Last Modified:
07/14/2026
Source:
Juniper Networks, Inc.

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National Vulnerability Database