CVE-2025-59962 (GCVE-0-2025-59962)
Vulnerability from cvelistv5 – Published: 2025-10-09 15:45 – Updated: 2025-10-09 19:05
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: With BGP sharding enabled, change in indirect next-hop can cause RPD crash
Summary
An Access of Uninitialized Pointer vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved with BGP sharding configured allows an attacker triggering indirect next-hop updates, along with timing outside the attacker's control, to cause rpd to crash and restart, leading to a Denial of Service (DoS).
With BGP sharding enabled, triggering route resolution of an indirect next-hop (e.g., an IGP route change over which a BGP route gets resolved), may cause rpd to crash and restart. An attacker causing continuous IGP route churn, resulting in repeated route re-resolution, will increase the likelihood of triggering this issue, leading to a potentially extended DoS condition.
This issue affects:
Junos OS:
* all versions before 21.4R3-S6,
* from 22.1 before 22.1R3-S6,
* from 22.2 before 22.2R3-S3,
* from 22.3 before 22.3R3-S3,
* from 22.4 before 22.4R3,
* from 23.2 before 23.2R2;
Junos OS Evolved:
* all versions before 22.3R3-S3-EVO,
* from 22.4 before 22.4R3-EVO,
* from 23.2 before 23.2R2-EVO.
Versions before Junos OS 21.3R1 and Junos OS Evolved 21.3R1-EVO are unaffected by this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-09 19:04 UTC
CWE
- CWE-824 - Access of Uninitialized Pointer
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA103151 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
21.4 , < 21.4R3-S6
(semver)
Affected: 22.1 , < 22.1R3-S6 (semver) Affected: 22.2 , < 22.2R3-S3 (semver) Affected: 22.3 , < 22.3R3-S3 (semver) Affected: 22.4 , < 22.4R3 (semver) Affected: 23.2 , < 23.2R2 (semver) Unaffected: 0 , < 21.3R1 (semver) |
guessed | |
| Juniper Networks | Junos OS Evolved |
Affected:
22.3 , < 22.3R3-S3-EVO
(semver)
Affected: 22.4 , < 22.4R3-EVO (semver) Affected: 23.2 , < 23.2R2-EVO (semver) Unaffected: 0 , < 21.3R1-EVO (semver) |
guessed |
Date Public
2025-10-08 16:00
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"value": "An Access of Uninitialized Pointer vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved with BGP sharding configured allows an attacker triggering indirect next-hop updates, along with timing outside the attacker\u0027s control, to cause rpd to crash and restart, leading to a Denial of Service (DoS).\n\nWith BGP sharding enabled, triggering route resolution of an indirect next-hop (e.g., an IGP route change over which a BGP route gets resolved), may cause rpd to crash and restart. An attacker causing continuous IGP route churn, resulting in repeated route re-resolution, will increase the likelihood of triggering this issue, leading to a potentially extended DoS condition.\n\nThis issue affects:\n\nJunos OS:\n\n\n\n * all versions before 21.4R3-S6,\u00a0\n * from 22.1 before 22.1R3-S6,\u00a0\n * from 22.2 before 22.2R3-S3,\u00a0\n * from 22.3 before 22.3R3-S3,\u00a0\n * from 22.4 before 22.4R3,\u00a0\n * from 23.2 before 23.2R2;\u00a0\n\n\n\n\nJunos OS Evolved:\u00a0\n\n\n\n * all versions before 22.3R3-S3-EVO,\u00a0\n * from 22.4 before 22.4R3-EVO,\u00a0\n * from 23.2 before 23.2R2-EVO.\n\n\n\n\nVersions before Junos OS 21.3R1 and Junos OS Evolved 21.3R1-EVO are unaffected by this issue."
},
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"value": "Una vulnerabilidad de acceso a puntero no inicializado en el demonio del protocolo de enrutamiento (rpd) de Juniper Networks Junos OS y Junos OS Evolved con BGP sharding configurado permite a un atacante que desencadena actualizaciones indirectas de next-hop, junto con una temporizaci\u00f3n fuera del control del atacante, causar que rpd falle y se reinicie, lo que lleva a una denegaci\u00f3n de servicio (DoS).\n\nCon BGP sharding habilitado, desencadenar la resoluci\u00f3n de ruta de un next-hop indirecto (por ejemplo, un cambio de ruta IGP sobre el cual se resuelve una ruta BGP), puede causar que rpd falle y se reinicie. Un atacante que causa una agitaci\u00f3n continua de rutas IGP, lo que resulta en una resoluci\u00f3n repetida de rutas, aumentar\u00e1 la probabilidad de desencadenar este problema, lo que lleva a una condici\u00f3n de DoS potencialmente extendida.\n\nEste problema afecta:\n\nJunos OS:\n\n * todas las versiones anteriores a 21.4R3-S6,\n * desde 22.1 antes de 22.1R3-S6,\n * desde 22.2 antes de 22.2R3-S3,\n * desde 22.3 antes de 22.3R3-S3,\n * desde 22.4 antes de 22.4R3,\n * desde 23.2 antes de 23.2R2;\n\nJunos OS Evolved:\n\n * todas las versiones anteriores a 22.3R3-S3-EVO,\n * desde 22.4 antes de 22.4R3-EVO,\n * desde 23.2 antes de 23.2R2-EVO.\n\nLas versiones anteriores a Junos OS 21.3R1 y Junos OS Evolved 21.3R1-EVO no se ven afectadas por este problema."
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"version": "23.2",
"versionType": "semver"
},
{
"lessThan": "21.3R1-EVO",
"status": "unaffected",
"version": "0",
"versionType": "semver"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
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"value": "Systems are only vulnerable to this issue if BGP sharding is enabled. For example:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ system processes routing bgp rib-sharding ]\u003c/tt\u003e"
}
],
"value": "Systems are only vulnerable to this issue if BGP sharding is enabled. For example:\n\n[ system processes routing bgp rib-sharding ]"
}
],
"datePublic": "2025-10-08T16:00:00.000Z",
"descriptions": [
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"lang": "en",
"supportingMedia": [
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"value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eAn Access of Uninitialized Pointer vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved with BGP sharding configured allows an attacker triggering indirect next-hop updates, along with timing outside the attacker\u0027s control, to cause rpd to crash and restart, leading to a Denial of Service (DoS).\u003c/span\u003e\u003cbr\u003e\u003cbr\u003eWith BGP sharding enabled, triggering route resolution of an indirect next-hop (e.g., an IGP route change over which a BGP route gets resolved), may cause rpd to crash and restart. An attacker causing continuous IGP route churn, resulting in repeated route re-resolution, will increase the likelihood of triggering this issue, leading to a potentially extended DoS condition.\u003cbr\u003e\u003cbr\u003e\u003cp\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJunos OS:\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 21.4R3-S6,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.1 before 22.1R3-S6,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.2 before 22.2R3-S3,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.3 before 22.3R3-S3,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.4 before 22.4R3,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2;\u0026nbsp;\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eJunos OS Evolved:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 22.3R3-S3-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.4 before 22.4R3-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003eVersions before Junos OS 21.3R1 and Junos OS Evolved 21.3R1-EVO are unaffected by this issue."
}
],
"value": "An Access of Uninitialized Pointer vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved with BGP sharding configured allows an attacker triggering indirect next-hop updates, along with timing outside the attacker\u0027s control, to cause rpd to crash and restart, leading to a Denial of Service (DoS).\n\nWith BGP sharding enabled, triggering route resolution of an indirect next-hop (e.g., an IGP route change over which a BGP route gets resolved), may cause rpd to crash and restart. An attacker causing continuous IGP route churn, resulting in repeated route re-resolution, will increase the likelihood of triggering this issue, leading to a potentially extended DoS condition.\n\nThis issue affects:\n\nJunos OS:\n\n\n\n * all versions before 21.4R3-S6,\u00a0\n * from 22.1 before 22.1R3-S6,\u00a0\n * from 22.2 before 22.2R3-S3,\u00a0\n * from 22.3 before 22.3R3-S3,\u00a0\n * from 22.4 before 22.4R3,\u00a0\n * from 23.2 before 23.2R2;\u00a0\n\n\n\n\nJunos OS Evolved:\u00a0\n\n\n\n * all versions before 22.3R3-S3-EVO,\u00a0\n * from 22.4 before 22.4R3-EVO,\u00a0\n * from 23.2 before 23.2R2-EVO.\n\n\n\n\nVersions before Junos OS 21.3R1 and Junos OS Evolved 21.3R1-EVO are unaffected by this issue."
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
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"base64": false,
"type": "text/html",
"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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],
"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
}
],
"metrics": [
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"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
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"lang": "en",
"value": "GENERAL"
}
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},
{
"cvssV4_0": {
"Automatable": "YES",
"Recovery": "AUTOMATIC",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "ADJACENT",
"baseScore": 6,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "CONCENTRATED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "MODERATE"
},
"format": "CVSS",
"scenarios": [
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"lang": "en",
"value": "GENERAL"
}
]
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],
"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-824",
"description": "CWE-824 Access of Uninitialized Pointer",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-09T15:45:19.343Z",
"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"shortName": "juniper"
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"references": [
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"tags": [
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"url": "https://supportportal.juniper.net/JSA103151"
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],
"solutions": [
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"value": "The following software releases have been updated to resolve this specific issue: \u003cbr\u003eJunos OS\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e21.4R3-S6, 22.1R3-S6, 22.2R3-S3, 22.3R3-S3, 22.4R3, 23.2R2, 23.4R1, and all subsequent releases.\u003c/span\u003e\n\n\u003cbr\u003eJunos OS Evolved 22.3R3-S3-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.\u003cbr\u003e\u003cbr\u003e"
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],
"value": "The following software releases have been updated to resolve this specific issue: \nJunos OS\u00a021.4R3-S6, 22.1R3-S6, 22.2R3-S3, 22.3R3-S3, 22.4R3, 23.2R2, 23.4R1, and all subsequent releases.\n\n\nJunos OS Evolved 22.3R3-S3-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases."
}
],
"source": {
"advisory": "JSA103151",
"defect": [
"1756068"
],
"discovery": "USER"
},
"title": "Junos OS and Junos OS Evolved: With BGP sharding enabled, change in indirect next-hop can cause RPD crash",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
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"base64": false,
"type": "text/html",
"value": "Temporarily disabling BGP sharding will mitigate this issue."
}
],
"value": "Temporarily disabling BGP sharding will mitigate this issue."
}
],
"x_generator": {
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"cveMetadata": {
"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"assignerShortName": "juniper",
"cveId": "CVE-2025-59962",
"datePublished": "2025-10-09T15:45:19.343Z",
"dateReserved": "2025-09-23T18:19:06.955Z",
"dateUpdated": "2025-10-09T19:05:04.870Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.