An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks Junos OS on MX Series with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).If the SIP ALG is enabled on an affected device, the processing of a malformed SIP invite packet will cause a flow processing daemon (flowd) crash and restart. This leads to a complete service outage until the system has automatically recovered.
This issue affects Junos OS on MX Series with SPC3 and SRX Series:
* all versions before 23.2R2-S7,
* 23.4 versions before 23.4R2-S8,
* 24.2 versions before 24.2R2-S5,
* 24.4 versions before 24.4R2-S4,
* 25.2 versions before 25.2R2,
* 25.4 versions before 25.4R1-S2.
References
| Link | Resource |
|---|---|
| https://supportportal.juniper.net/JSA110086 | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
|
History
25 Oct 2026, 15:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary |
|
Information
Published : 2026-07-09 22:17
Updated : 2026-10-25 15:10
NVD link : CVE-2026-57026
Mitre link : CVE-2026-57026
CVE.ORG link : CVE-2026-57026
JSON object : View
Products Affected
juniper
- mx-spc3
- srx4120
- srx440
- srx5400
- srx5800
- srx300
- srx4300
- srx340
- srx4600
- mx960
- mx240
- junos
- srx4700
- srx1600
- srx345
- srx5600
- srx320
- srx1500
- mx480
- srx400
- srx4100
- srx4200
- srx380
- srx2300
CWE
CWE-1286
Improper Validation of Syntactic Correctness of Input
