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High severity · published Jul 9, 2026
CVE-2026-57028
Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacker
7.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JO
Junos OS Evolved · Juniper Networks
before 23.2R2-EVO · source: vendor, NVD
Affected product
JO
Junos OS Evolved
Juniper Networks
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57028
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57028
Vendor Advisory
https://supportportal.juniper.net/JSA110088
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