CVE-2026-57025
Description
A Return of Pointer Value Outside of Expected Range vulnerability in the fileio library of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privilged attacker to cause a Denial-of-Service (DoS). On EX Series, QFX Series and MX Series a low-privileged attacker issuing a specific 'show l2-learning' or 'show ethernet-switching' command will cause an l2ald crash which will lead to a temporary service impact for all layer 2 services until the process has automatically restarted. This issue affects EX Series, QFX Series, MX Series: Junos OS: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S7, * 24.2 versions before 24.2R2, * 24.4 versions before 24.4R1-S2. Junos OS Evolved: * all versions before 23.2R2-S7-EVO, * 23.4 versions before 23.4R2-S8-EVO, * 24.2 versions before 24.2R2-EVO, * 24.4 versions before 24.4R1-S3-EVO.
How to fix
- juniper junos23.2 or later
- juniper junos_os_evolved23.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| juniper junos | v < 23.2, 23.2, 23.4, 24.2, 24.4 | 23.2 |
| juniper junos_os_evolved | v < 23.2, 23.2, 23.4, 24.2, 24.4 | 23.2 |
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Attack Surface Management
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