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CVE-2025-52986 (GCVE-0-2025-52986)

Vulnerability from cvelistv5 – Published: 2025-07-11 15:10 – Updated: 2025-07-15 19:55
VLAI
Title
Junos OS and Junos OS Evolved: When RIB sharding is configured each time a show command is executed RPD memory leaks
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low privileged user to cause an impact to the availability of the device. When RIB sharding is enabled and a user executes one of several routing related 'show' commands, a certain amount of memory is leaked. When all available memory has been consumed rpd will crash and restart. The leak can be monitored with the CLI command: show task memory detail | match task_shard_mgmt_cookie where the allocated memory in bytes can be seen to continuously increase with each exploitation. This issue affects: Junos OS: * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S11, * 22.2 versions before 22.2R3-S7, * 22.4 versions before 22.4R3-S7, * 23.2 versions before 23.2R2-S4,  * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2, * 24.4 versions before 24.4R1-S2, 24.4R2; Junos OS Evolved: * all versions before 22.2R3-S7-EVO * 22.4-EVO versions before 22.4R3-S7-EVO, * 23.2-EVO versions before 23.2R2-S4-EVO, * 23.4-EVO versions before 23.4R2-S4-EVO, * 24.2-EVO versions before 24.2R2-EVO,  * 24.4-EVO versions before 24.4R2-EVO.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-11 16:04 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version CPE status
Juniper Networks Junos OS Affected: 0 , < 21.2R3-S9 (semver)
Affected: 21.4 , < 21.4R3-S11 (semver)
Affected: 22.2 , < 22.2R3-S7 (semver)
Affected: 22.4 , < 22.4R3-S7 (semver)
Affected: 23.2 , < 23.2R2-S4 (semver)
Affected: 23.4 , < 23.4R2-S4 (semver)
Affected: 24.2 , < 24.2R2 (semver)
Affected: 24.4 , < 24.4R1-S2, 24.4R2 (semver)
guessed Create a notification for this product.
Juniper Networks Junos OS Evolved Affected: 0 , < 22.2R3-S7-EVO (semver)
Affected: 22.4-EVO , < 22.4R3-S7-EVO (semver)
Affected: 23.2-EVO , < 23.2R2-S4-EVO (semver)
Affected: 23.4-EVO , < 23.4R2-S4-EVO (semver)
Affected: 24.2-EVO , < 24.2R2-EVO (semver)
Affected: 24.4-EVO , < 24.4R2-EVO (semver)
guessed Create a notification for this product.
Date Public
2025-07-09 16:00
Show details on NVD website
To clipboard 

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When all available memory has been consumed rpd will crash and restart.\\n\\nThe leak can be monitored with the CLI command:\\n\\n\\n\\nshow task memory detail | match task_shard_mgmt_cookie\\n\\n\\n\\nwhere the allocated memory in bytes can be seen to continuously increase with each exploitation.\\n\\n\\n\\nThis issue affects:\\n\\nJunos OS:\\n\\n  *  all versions before 21.2R3-S9,\\n  *  21.4 versions before 21.4R3-S11,\\n  *  22.2 versions before 22.2R3-S7,\\n  *  22.4 versions before 22.4R3-S7,\\n  *  23.2 versions before 23.2R2-S4,\u00a0\\n  *  23.4 versions before 23.4R2-S4,\\n  *  24.2 versions before 24.2R2,\\n  *  24.4 versions before 24.4R1-S2, 24.4R2;\\n\\n\\nJunos OS Evolved:\\n\\n  *  all versions before 22.2R3-S7-EVO\\n  *  22.4-EVO versions before 22.4R3-S7-EVO,\\n  *  23.2-EVO versions before 23.2R2-S4-EVO,\\n  *  23.4-EVO versions before 23.4R2-S4-EVO,\\n  *  24.2-EVO versions before 24.2R2-EVO,\u00a0\\n  *  24.4-EVO versions before 24.4R2-EVO.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad de falta de liberaci\u00f3n de memoria tras el tiempo de vida \u00fatil efectivo en el daemon del protocolo de enrutamiento (rpd) de Juniper Networks Junos OS y Junos OS Evolved permite que un usuario local con pocos privilegios afecte la disponibilidad del dispositivo. Cuando se habilita la fragmentaci\u00f3n RIB y un usuario ejecuta uno de los varios comandos \\\"show\\\" relacionados con el enrutamiento, se pierde cierta cantidad de memoria. Cuando se consume toda la memoria disponible, rpd se bloquea y se reinicia. La p\u00e9rdida se puede monitorizar con el comando de la CLI: show task memory detail | match task_shard_mgmt_cookie, donde se observa que la memoria asignada en bytes aumenta continuamente con cada explotaci\u00f3n. Este problema afecta a: Junos OS: * todas las versiones anteriores a 21.2R3-S9, * versiones 21.4 anteriores a 21.4R3-S11, * versiones 22.2 anteriores a 22.2R3-S7, * versiones 22.4 anteriores a 22.4R3-S7, * versiones 23.2 anteriores a 23.2R2-S4, * versiones 23.4 anteriores a 23.4R2-S4, * versiones 24.2 anteriores a 24.2R2, * versiones 24.4 anteriores a 24.4R1-S2, 24.4R2; Junos OS Evolved: * todas las versiones anteriores a 22.2R3-S7-EVO * versiones 22.4-EVO anteriores a 22.4R3-S7-EVO, * versiones 23.2-EVO anteriores a 23.2R2-S4-EVO, * versiones 23.4-EVO anteriores a 23.4R2-S4-EVO, * versiones 24.2-EVO anteriores a 24.2R2-EVO, * versiones 24.4-EVO anteriores a 24.4R2-EVO.\"}],\"affected\":[{\"source\":\"sirt@juniper.net\",\"affectedData\":[{\"vendor\":\"Juniper Networks\",\"product\":\"Junos OS\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"21.2R3-S9\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"21.4\",\"lessThan\":\"21.4R3-S11\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"22.2\",\"lessThan\":\"22.2R3-S7\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"22.4\",\"lessThan\":\"22.4R3-S7\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"23.2\",\"lessThan\":\"23.2R2-S4\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"23.4\",\"lessThan\":\"23.4R2-S4\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"24.2\",\"lessThan\":\"24.2R2\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"24.4\",\"lessThan\":\"24.4R1-S2, 24.4R2\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Juniper Networks\",\"product\":\"Junos OS 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    "redhat_vex": {
      "current_release_date": "2025-07-13T15:20:51+00:00",
      "cve": "CVE-2025-52986",
      "id": "CVE-2025-52986",
      "initial_release_date": "2025-07-09T16:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Junos OS and Junos OS Evolved: When RIB sharding is configured each time a show command is executed RPD memory leaks",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-52986.json",
      "version": "3"
    },
    "vulnrichment": {
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\"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"base64\": false}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"The following software releases have been updated to resolve this specific issue:\\nJunos OS Evolved: 22.2R3-S7-EVO, 22.4R3-S7-EVO, 23.2R2-S4-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R2-EVO, 25.2R1-EVO,\\u00a0and all subsequent releases;\\nJunos OS: 21.2R3-S9, 21.4R3-S11, 22.2R3-S7, 22.4R3-S7, 23.2R2-S4, 23.4R2-S4, 24.2R2, 24.4R1-S2, 24.4R2, 25.2R1, and all subsequent releases.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"The following software releases have been updated to resolve this specific issue:\u003cbr\u003eJunos OS Evolved: 22.2R3-S7-EVO, 22.4R3-S7-EVO, 23.2R2-S4-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R2-EVO, 25.2R1-EVO,\u0026nbsp;and all subsequent releases;\u003cbr\u003eJunos OS: 21.2R3-S9, 21.4R3-S11, 22.2R3-S7, 22.4R3-S7, 23.2R2-S4, 23.4R2-S4, 24.2R2, 24.4R1-S2, 24.4R2, 25.2R1, and all subsequent releases.\", \"base64\": false}]}], \"datePublic\": \"2025-07-09T16:00:00.000Z\", \"references\": [{\"url\": \"https://supportportal.juniper.net/JSA100092\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators.\u003cbr\u003e\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low privileged user to cause an impact to the availability of the device.\\n\\nWhen RIB sharding is enabled and a user executes one of several routing related \u0027show\u0027 commands, a certain amount of memory is leaked. When all available memory has been consumed rpd will crash and restart.\\n\\nThe leak can be monitored with the CLI command:\\n\\n\\n\\nshow task memory detail | match task_shard_mgmt_cookie\\n\\n\\n\\nwhere the allocated memory in bytes can be seen to continuously increase with each exploitation.\\n\\n\\n\\nThis issue affects:\\n\\nJunos OS:\\n\\n  *  all versions before 21.2R3-S9,\\n  *  21.4 versions before 21.4R3-S11,\\n  *  22.2 versions before 22.2R3-S7,\\n  *  22.4 versions before 22.4R3-S7,\\n  *  23.2 versions before 23.2R2-S4,\\u00a0\\n  *  23.4 versions before 23.4R2-S4,\\n  *  24.2 versions before 24.2R2,\\n  *  24.4 versions before 24.4R1-S2, 24.4R2;\\n\\n\\nJunos OS Evolved:\\n\\n  *  all versions before 22.2R3-S7-EVO\\n  *  22.4-EVO versions before 22.4R3-S7-EVO,\\n  *  23.2-EVO versions before 23.2R2-S4-EVO,\\n  *  23.4-EVO versions before 23.4R2-S4-EVO,\\n  *  24.2-EVO versions before 24.2R2-EVO,\\u00a0\\n  *  24.4-EVO versions before 24.4R2-EVO.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low privileged user to cause an impact to the availability of the device.\u003cbr\u003e\u003cbr\u003eWhen RIB sharding is enabled and a user executes one of several routing related \u0027show\u0027 commands, a certain amount of memory is leaked. When all available memory has been consumed rpd will crash and restart.\u003cbr\u003e\u003cbr\u003eThe leak can be monitored with the CLI command:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e\u003c/tt\u003e\\n\\n\u003ctt\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eshow task memory detail | match task_shard_mgmt_cookie\u003cbr\u003e\u003c/span\u003e\u003c/tt\u003e\\n\\n\u003cbr\u003ewhere the allocated memory in bytes can be seen to continuously increase with each exploitation.\u003cbr\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e\u003cp\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJunos OS:\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 21.2R3-S9,\u003c/li\u003e\u003cli\u003e21.4 versions before 21.4R3-S11,\u003c/li\u003e\u003cli\u003e22.2 versions before 22.2R3-S7,\u003c/li\u003e\u003cli\u003e22.4 versions before 22.4R3-S7,\u003c/li\u003e\u003cli\u003e23.2 versions before 23.2R2-S4,\u0026nbsp;\u003c/li\u003e\u003cli\u003e23.4 versions before 23.4R2-S4,\u003c/li\u003e\u003cli\u003e24.2 versions before 24.2R2,\u003c/li\u003e\u003cli\u003e24.4 versions before 24.4R1-S2, 24.4R2;\u003c/li\u003e\u003c/ul\u003e\u003cp\u003eJunos OS Evolved:\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 22.2R3-S7-EVO\u003c/li\u003e\u003cli\u003e22.4-EVO versions before 22.4R3-S7-EVO,\u003c/li\u003e\u003cli\u003e23.2-EVO versions before 23.2R2-S4-EVO,\u003c/li\u003e\u003cli\u003e23.4-EVO versions before 23.4R2-S4-EVO,\u003c/li\u003e\u003cli\u003e24.2-EVO versions before 24.2R2-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003e24.4-EVO versions before 24.4R2-EVO.\u003c/li\u003e\u003c/ul\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"To be exposed to this issue a system needs to be configured with RIB sharding:\\n\\n[ system processes routing bgp \\n\\nrib-sharding \\n\\n]\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"To be exposed to this issue a system needs to be configured with RIB sharding:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ system processes routing bgp \\n\\n\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003erib-sharding \u003c/span\u003e\\n\\n]\u003c/tt\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2025-07-11T15:10:20.934Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-52986\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-07-15T19:55:10.352Z\", \"dateReserved\": \"2025-06-23T18:23:44.546Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2025-07-11T15:10:20.934Z\", \"assignerShortName\": \"juniper\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.