CVE-2026-57028: junos os evolved — Fix

Description

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause license exhaustion. Due to an incorrect initialization, a process which should only be able to communicate internally within the device, can be reached over the network via an open port. This leads to unauthorized access to the license management. This issue affects all Junos OS Evolved versions before 23.2R2-EVO.

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CVSS v3.1 Score

7.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS — Exploit Prediction

0.0030

Probability of exploitation

0.22%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-923 CWE-923

Affected Products

Vendor	Product	Versions
juniper	junos_os_evolved	< 23.2
juniper	junos_os_evolved	All
juniper	junos_os_evolved	All
juniper	junos_os_evolved	All
juniper	junos_os_evolved	All

References

Advisories & Patches

https://supportportal.juniper.net/JSA110088

Frequently Asked Questions

What is CVE-2026-57028? +

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause license exhaustion. Due to an incorrect initialization, a process which should only be able to communicate internally within the device, can be reached over the network via an open port. This leads to unauthorized access to the license management. This issue affects all Junos OS Evolved versions before 23.2R2-EVO. It has a CVSS v3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-57028? +

CVE-2026-57028 has a CVSS v3.1 score of 7.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0030, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-57028? +

CVE-2026-57028 affects products from juniper, specifically: junos_os_evolved. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-57028? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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