CVE-2025-59964 (GCVE-0-2025-59964)

Vulnerability from cvelistv5 – Published: 2025-10-09 15:46 – Updated: 2025-10-09 19:00
VLAI
Title
Junos OS: SRX4700: When forwarding-options sampling is enabled any traffic destined to the RE will cause the forwarding line card to crash and restart
Summary
A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700 devices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When forwarding-options sampling is enabled, receipt of any traffic destined to the Routing Engine (RE) by the PFE line card leads to an FPC crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card. This issue affects Junos OS on SRX4700:  * from 24.4 before 24.4R1-S3, 24.4R2 This issue affects IPv4 and IPv6.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M/U:Green
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-09 18:59 UTC
CWE
  • CWE-908 - Use of Uninitialized Resource
Assigner
References
Impacted products
Vendor Product Version CPE status
Juniper Networks Junos OS Affected: 24.4 , < 24.4R1-S3, 24.4R2 (semver)
guessed Create a notification for this product.
Date Public
2025-10-08 16:00
Show details on NVD website
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                  "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eA Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700\u0026nbsp;\u003cspan style=\"background-color: rgb(251, 251, 251);\"\u003edevices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\u003c/span\u003e\u003c/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eWhen forwarding-options sampling\u0026nbsp;\u003c/span\u003eis enabled, receipt\u0026nbsp;of any traffic destined to the Routing Engine (RE) by the PFE line card\u0026nbsp;\u003cspan style=\"background-color: rgb(251, 251, 251);\"\u003eleads to an FPC crash and restart, resulting in a Denial of Service (DoS). \u003cbr\u003e\u003cbr\u003eContinued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card.\u003cspan style=\"background-color: rgb(251, 251, 251);\"\u003e\u003cbr\u003e\u003c/span\u003e\u003cp\u003e\u003c/p\u003e\u003c/span\u003e\u003cp\u003eThis issue affects\u0026nbsp;Junos OS on SRX4700:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003efrom 24.4 before 24.4R1-S3, 24.4R2\u003c/li\u003e\u003c/ul\u003eThis issue affects IPv4 and IPv6.\u003cbr\u003e\u003cp\u003e\u003c/p\u003e"
                }
              ],
              "value": "A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700\u00a0devices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nWhen forwarding-options sampling\u00a0is enabled, receipt\u00a0of any traffic destined to the Routing Engine (RE) by the PFE line card\u00a0leads to an FPC crash and restart, resulting in a Denial of Service (DoS). \n\nContinued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card.\n\n\nThis issue affects\u00a0Junos OS on SRX4700:\u00a0\n\n\n\n  *  from 24.4 before 24.4R1-S3, 24.4R2\n\n\nThis issue affects IPv4 and IPv6."
            }
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          "exploits": [
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                  "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."
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          "metrics": [
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                "attackComplexity": "LOW",
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                "valueDensity": "CONCENTRATED",
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                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "MODERATE"
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              "descriptions": [
                {
                  "cweId": "CWE-908",
                  "description": "CWE-908: Use of Uninitialized Resource",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-10-09T15:46:25.285Z",
            "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
            "shortName": "juniper"
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            {
              "tags": [
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              "url": "https://supportportal.juniper.net/JSA103153"
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              "tags": [
                "technical-description"
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              "url": "https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/statement/sampling-edit-forwarding-options.html"
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                  "value": "The following software releases have been updated to resolve this specific issue: \u003cbr\u003e\u003cbr\u003eJunos OS: 24.4R1-S3, 24.4R2,\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e25.2R1 and all subsequent releases.\u003c/span\u003e\u003cbr\u003e"
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              "value": "The following software releases have been updated to resolve this specific issue: \n\nJunos OS: 24.4R1-S3, 24.4R2,\u00a025.2R1 and all subsequent releases."
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          "source": {
            "advisory": "JSA103153",
            "defect": [
              "1867583"
            ],
            "discovery": "USER"
          },
          "title": "Junos OS: SRX4700: When forwarding-options sampling is enabled any traffic destined to the RE will cause the forwarding line card to crash and restart",
          "workarounds": [
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              "lang": "en",
              "supportingMedia": [
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                  "value": "To workaround this issue an administrator must block all traffic from the PFE line card to the Routing Engine (RE) until a fix can be taken.\u003cbr\u003eEven while under a persistent DoS attack the RE will continue to be accessible to administrators through non-PFE line card interfaces E.g. Console, FXP0.\u003cbr\u003e"
                }
              ],
              "value": "To workaround this issue an administrator must block all traffic from the PFE line card to the Routing Engine (RE) until a fix can be taken.\nEven while under a persistent DoS attack the RE will continue to be accessible to administrators through non-PFE line card interfaces E.g. Console, FXP0."
            }
          ],
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      "cveMetadata": {
        "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "assignerShortName": "juniper",
        "cveId": "CVE-2025-59964",
        "datePublished": "2025-10-09T15:46:25.285Z",
        "dateReserved": "2025-09-23T18:19:06.955Z",
        "dateUpdated": "2025-10-09T19:00:04.954Z",
        "state": "PUBLISHED"
      },
      "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

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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.
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  • 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.



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.