EUVD-2026-42716
GHSA-jvwv-xxr5-8965
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:M/U:X
Unauthenticated network access to an exposed port (AV:N/AC:L/PR:N/UI:N) yields unauthorized license-management access with limited C/I and license-exhaustion availability impact, matching the vendor 7.3 rating.
Primary rating from Vendor (juniper).
CVSS VectorVendor: juniper
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:M/U:X
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
License exhaustion in Juniper Networks Junos OS Evolved lets an unauthenticated, network-based attacker reach the device's license-management process, which was intended to be internal-only but is exposed on an open network port due to incorrect initialization. All Junos OS Evolved releases before 23.2R2-EVO are affected. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network-level reachability to the specific port that, due to incorrect initialization, exposes the internal license-management process on a device running Junos OS Evolved before 23.2R2-EVO - no authentication and no user interaction are needed (PR:N/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L, base 7.3 High) indicates a remotely reachable, low-complexity, unauthenticated flaw with limited but real impact across all three of confidentiality, integrity and availability - consistent with unauthorized access to license management culminating in license exhaustion (an availability/functional-degradation outcome). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network reachability to a vulnerable Junos OS Evolved device connects to the erroneously exposed port fronting the internal license-management process and, without any credentials, issues requests that consume licensing resources until licenses are exhausted, degrading licensed features on the device. Given AV:N/AC:L/PR:N, no user interaction or authentication is required; no public exploit code is identified at time of analysis, so exploitation would require an attacker to independently develop the interaction. |
| Remediation | Apply the vendor fix: Vendor-released patch 23.2R2-EVO - upgrade all affected devices to Junos OS Evolved 23.2R2-EVO or later per Juniper Security Advisory JSA110088 (https://supportportal.juniper.net/JSA110088). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all Juniper Junos OS Evolved devices running versions before 23.2R2-EVO and assess network access to the license-management port. …
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External POC / Exploit Code
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