An Improper Locking vulnerability in the GTP plugin of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (Dos).
If an SRX Series device receives a specifically malformed GPRS Tunnelling Protocol (GTP) Modify Bearer Request message, a lock is acquired and never released. This results in other threads not being able to acquire a lock themselves, causing a watchdog timeout leading to FPC crash and restart. This issue leads to a complete traffic outage until the device has automatically recovered.
This issue affects Junos OS on SRX Series:
* 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-S3,
* 24.4 versions before 24.4R2-S2,
* 25.2 versions before 25.2R1-S1, 25.2R2.
References
| Link | Resource |
|---|---|
| https://kb.juniper.net/JSA106015 | Vendor Advisory |
| https://supportportal.juniper.net/JSA106015 | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
|
History
No history.
Information
Published : 2026-01-15 21:16
Updated : 2026-01-23 19:41
NVD link : CVE-2026-21914
Mitre link : CVE-2026-21914
CVE.ORG link : CVE-2026-21914
JSON object : View
Products Affected
juniper
- srx380
- srx4120
- srx5400
- srx2300
- srx5800
- srx4600
- junos
- srx320
- srx340
- srx4200
- srx5600
- srx1600
- srx4700
- srx4300
- srx345
- srx1500
- srx4100
- srx300
CWE
CWE-667
Improper Locking