FKIE_CVE-2026-33803
Vulnerability from fkie_nvd - Published: 2026-07-09 22:17 - Updated: 2026-07-13 20:59
Severity
Summary
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device.
Due to a wrong 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 a device being inadvertently exposed and increased CPU cycles spent processing ingress packets.
This issue affects Junos OS Evolved:
* all versions before 23.2R2-S7-EVO,
* 23.4 versions before 23.4R2-S8-EVO,
* 24.2 versions before 24.2R2-S5-EVO,
* 24.4 versions before 24.4R2-S4-EVO,
* 25.2 versions before 25.2R2-S1-EVO,
* 25.4 versions before 25.4R1-S2-EVO.
References
| URL | Tags | ||
|---|---|---|---|
| sirt@juniper.net | https://supportportal.juniper.net/JSA110078 | Vendor Advisory |
Impacted products
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a limited information disclosure and availability impact to the device.\n\n\nDue to a wrong 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 a device being inadvertently exposed and increased CPU cycles spent processing ingress packets.\n\nThis issue affects Junos OS Evolved:\n\n\n * all versions before 23.2R2-S7-EVO,\n * 23.4 versions before 23.4R2-S8-EVO,\n * 24.2 versions before 24.2R2-S5-EVO,\n * 24.4 versions before 24.4R2-S4-EVO,\n * 25.2 versions before 25.2R2-S1-EVO,\n * 25.4 versions before 25.4R1-S2-EVO."
}
],
"id": "CVE-2026-33803",
"lastModified": "2026-07-13T20:59:26.603",
"metrics": {
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"availabilityImpact": "LOW",
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"confidentialityImpact": "LOW",
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"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
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"modifiedPrivilegesRequired": "NOT_DEFINED",
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"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
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"valueDensity": "NOT_DEFINED",
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"options": [
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"role": "CISA Coordinator",
"timestamp": "2026-07-10T13:30:15.593698Z",
"version": "2.0.3"
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"published": "2026-07-09T22:17:03.807",
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"tags": [
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"value": "CWE-923"
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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