Vulnerability Monitor

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CVE-2026-57025


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.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 42 products from juniper, from juniper, from juniper and 39 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2026, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2026-07-09T22:17:07.747

Last Modified

2026-07-16T09:16:18.650

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-466

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System juniper junos < 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 24.2 Yes
Operating System juniper junos 24.2 Yes
Operating System juniper junos 24.2 Yes
Operating System juniper junos 24.2 Yes
Operating System juniper junos 24.4 Yes
Operating System juniper junos 24.4 Yes
Hardware juniper ex2300 - No
Hardware juniper ex2300-c - No
Hardware juniper ex3400 - No
Hardware juniper ex4000 - No
Hardware juniper ex4100 - No
Hardware juniper ex4100-f - No
Hardware juniper ex4100-h - No
Hardware juniper ex4100-h-12t - No
Hardware juniper ex4300 - No
Hardware juniper ex4400 - No
Hardware juniper ex4600 - No
Hardware juniper ex4650 - No
Hardware juniper ex9204 - No
Hardware juniper ex9208 - No
Hardware juniper ex9214 - No
Hardware juniper mx10004 - No
Hardware juniper mx10008 - No
Hardware juniper mx2008 - No
Hardware juniper mx2010 - No
Hardware juniper mx2020 - No
Hardware juniper mx204 - No
Hardware juniper mx240 - No
Hardware juniper mx301 - No
Hardware juniper mx304 - No
Hardware juniper mx480 - No
Hardware juniper mx960 - No
Hardware juniper qfx10008 - No
Hardware juniper qfx10016 - No
Hardware juniper qfx5110 - No
Hardware juniper qfx5120 - No
Hardware juniper qfx5130 - No
Hardware juniper qfx5140 - No
Hardware juniper qfx5200 - No
Hardware juniper qfx5210 - No
Hardware juniper qfx5220 - No
Hardware juniper qfx5230-64cd - No
Hardware juniper qfx5240 - No
Hardware juniper qfx5241 - No
Hardware juniper qfx5250 - No
Hardware juniper qfx5700 - No
Operating System juniper junos_os_evolved < 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 24.2 Yes
Operating System juniper junos_os_evolved 24.2 Yes
Operating System juniper junos_os_evolved 24.2 Yes
Operating System juniper junos_os_evolved 24.4 Yes
Operating System juniper junos_os_evolved 24.4 Yes
Operating System juniper junos_os_evolved 24.4 Yes
Hardware juniper ex2300 - No
Hardware juniper ex2300-c - No
Hardware juniper ex3400 - No
Hardware juniper ex4000 - No
Hardware juniper ex4100 - No
Hardware juniper ex4100-f - No
Hardware juniper ex4100-h - No
Hardware juniper ex4100-h-12t - No
Hardware juniper ex4300 - No
Hardware juniper ex4400 - No
Hardware juniper ex4600 - No
Hardware juniper ex4650 - No
Hardware juniper ex9204 - No
Hardware juniper ex9208 - No
Hardware juniper ex9214 - No
Hardware juniper mx10004 - No
Hardware juniper mx10008 - No
Hardware juniper mx2008 - No
Hardware juniper mx2010 - No
Hardware juniper mx2020 - No
Hardware juniper mx204 - No
Hardware juniper mx240 - No
Hardware juniper mx301 - No
Hardware juniper mx304 - No
Hardware juniper mx480 - No
Hardware juniper mx960 - No
Hardware juniper qfx10008 - No
Hardware juniper qfx10016 - No
Hardware juniper qfx5110 - No
Hardware juniper qfx5120 - No
Hardware juniper qfx5130 - No
Hardware juniper qfx5140 - No
Hardware juniper qfx5200 - No
Hardware juniper qfx5210 - No
Hardware juniper qfx5220 - No
Hardware juniper qfx5230-64cd - No
Hardware juniper qfx5240 - No
Hardware juniper qfx5241 - No
Hardware juniper qfx5250 - No
Hardware juniper qfx5700 - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For juniper's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.