CVE-2026-57025
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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' 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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Juniper Networks | Junos OS | 0 < 23.2R2-S7 | affected |
| Juniper Networks | Junos OS | 23.4 < 23.4R2-S7 | affected |
| Juniper Networks | Junos OS | 24.2 < 24.2R2 | affected |
| Juniper Networks | Junos OS | 24.4 < 24.4R1-S2 | affected |
| Juniper Networks | Junos OS Evolved | 0 < 23.2R2-S7-EVO | affected |
| Juniper Networks | Junos OS Evolved | 23.4 < 23.4R2-S8-EVO | affected |
| Juniper Networks | Junos OS Evolved | 24.2 < 24.2R2-EVO | affected |
| Juniper Networks | Junos OS Evolved | 24.4 < 24.4R1-S3-EVO | affected |
Weaknesses
- CWE-466: CWE-466 Return of Pointer Value Outside of Expected Range
Workarounds
There are no known workarounds for this issue.
To reduce the risk of exploitation use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators.
References
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