Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | < 22.4R3-S8, 23.2 – < 23.2R2-S6, 23.4 – < 23.4R2-S6, 24.2 – < 24.2R2-S3, 24.4 – < 24.4R2, 25.2 – < 25.2R2 | 22.4R3-S8 |
Advisories 1
- WID-SEC-2026-1022 Juniper Patchday April 2026: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 9, 2026
References
- https://github.com/orangecertcc/security-research/security/advisories/GHSA-fwhc-gh5m-v8fq third-party-advisory
- https://kb.juniper.net/JSA107863 vendor-advisory