Juniper Junos
CVE-2025-30650
A Missing Authentication for Critical Function vulnerability in command processing of Juniper Networks Junos OS allows a privileged local attacker to gain access to Linux-based line cards as root. This issue affects systems running Junos OS using Linux-based line cards. Affected line cards include: * MPC7, MPC8, MPC9, MPC10, MPC11 * LC2101, LC2103 * LC480, LC4800, LC9600 * MX304 (built-in FPC) * MX-SPC3 * SRX5K-SPC3 * EX9200-40XS * FPC3-PTX-U2, FPC3-PTX-U3 * FPC3-SFF-PTX * LC1101, LC1102, LC1104, LC1105 This issue affects Junos OS: * all versions before 22.4R3-S8, * from 23.2 before 23.2R2-S6, * from 23.4 before 23.4R2-S6, * from 24.2 before 24.2R2-S3, * from 24.4 before 24.4R2, * from 25.2 before 25.2R2.
What this means for your business
- It affects Juniper Junos. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it only with access to the machine itself, with an administrator login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Juniper Junos, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 6.7 (v3.1)
- Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H- CVSS v4
- 8.4
- Weakness
- CWE-306
- Assigned by
- sirt@juniper.net
Dates
- Published
- 2026-04-08
- Last modified
- 2026-08-26
- Sources
- NVD
Affected products
- Juniper Junos- 22.4, 22.4, 23.2, 23.4, 24.2, 25.2
- Juniper Ex9200all versions
- Juniper Fpc3-Ptx-U2all versions
- Juniper Fpc3-Ptx-U3all versions
- Juniper Fpc3-Sff-Ptxall versions
- Juniper Lc1101all versions
- Juniper Lc1102all versions
- Juniper Lc1104all versions
- Juniper Lc1105all versions
- Juniper Lc2101all versions
- Juniper Lc2103all versions
- Juniper Lc480all versions
As listed in the NVD configuration data. Not a statement about your estate.