CVE-2026-102083 (GCVE-0-2026-102083)

Vulnerability from cvelistv5 – Published: 2026-10-14 16:24 – Updated: 2026-10-14 20:26
VLAI
Title
Junos OS: SRX Series: With WebFiltering enabled prolonged HTTP session load can cause a crash
Summary
An Improper Resource Locking vulnerability in the UTM processing of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). When UTM WebFiltering is configured and the WebFiltering cloud server is unreachable, sustained HTTP traffic load may cause the UTM subsystem to crash and restart, which will lead to a complete service outage until the system has recovered. When category lookup requests cannot be completed, they accumulate internally. Under high load and specific timing conditions, an invalid internal state can occur during cleanup of pending WebFiltering lookups, resulting in a crash of the UTM process. This issue applies to both NextGeneration WebFiltering (NGWF) and Enhanced WebFiltering (EWF). This issue affects Junos OS on SRX Series: * 23.2 versions from 23.2R2 before 23.2R2-S7.7; * 23.4 versions from 23.4R2 before 23.4R2-S8.13; * 24.2 versions before 24.2R2-S5.5; * 24.4 versions before 24.4R2-S4; * 25.2 versions before 25.2R2-S1; * 25.4 versions before 25.4R1-S3, 25.4R2.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/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 2026-10-14 20:16 UTC
CWE
  • CWE-413 - Improper Resource Locking
Assigner
juniper CNA under the mitre root
CNA scorecard B 85/100 over 175 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Juniper Networks Junos OS Affected: 23.2R2 , < 23.2R2-S7.7 (custom)
Affected: 23.4R2 , < 23.4R2-S8.13 (custom)
Affected: 24.2 , < 24.2R2-S5.5 (custom)
Affected: 24.4 , < 24.4R2-S4 (custom)
Affected: 25.2 , < 25.2R2-S1 (custom)
Affected: 25.4 , < 25.4R1-S3, 25.4R2 (custom)
guessed Create a notification for this product.
Date Public
2026-10-14 16:00
Show details on NVD website
To clipboard 

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                  "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eAn Improper Resource Locking vulnerability in the UTM processing of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\u003c/span\u003e\u003cbr\u003e\n\n\u003cbr\u003eWhen UTM WebFiltering is configured and the WebFiltering cloud server is unreachable, sustained HTTP traffic load may cause the UTM subsystem to crash and restart, which will lead to a complete service outage until the system has recovered.\u003cbr\u003eWhen category lookup requests cannot be completed, they accumulate internally. Under high load and specific timing conditions, an invalid internal state can occur during cleanup of pending WebFiltering lookups, resulting in a crash of the UTM process.\nThis issue applies to both NextGeneration WebFiltering (NGWF) and Enhanced WebFiltering (EWF).\u003cbr\u003e\u003cp\u003e\u003cbr\u003eThis issue affects Junos OS on SRX Series:\u003cbr\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003e23.2 versions from 23.2R2 before 23.2R2-S7.7;\u003c/li\u003e\u003cli\u003e23.4 versions from 23.4R2 before 23.4R2-S8.13;\u003c/li\u003e\u003cli\u003e24.2 versions before 24.2R2-S5.5;\u003c/li\u003e\u003cli\u003e24.4 versions before 24.4R2-S4;\u003c/li\u003e\u003cli\u003e25.2 versions before 25.2R2-S1;\u003c/li\u003e\u003cli\u003e25.4 versions before 25.4R1-S3, 25.4R2.\u003c/li\u003e\u003c/ul\u003e\u003cbr\u003e\u003cp\u003e\u003c/p\u003e"
                }
              ],
              "value": "An Improper Resource Locking vulnerability in the UTM processing of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\nWhen UTM WebFiltering is configured and the WebFiltering cloud server is unreachable, sustained HTTP traffic load may cause the UTM subsystem to crash and restart, which will lead to a complete service outage until the system has recovered.\nWhen category lookup requests cannot be completed, they accumulate internally. Under high load and specific timing conditions, an invalid internal state can occur during cleanup of pending WebFiltering lookups, resulting in a crash of the UTM process.\nThis issue applies to both NextGeneration WebFiltering (NGWF) and Enhanced WebFiltering (EWF).\n\nThis issue affects Junos OS on SRX Series:\n\n\n  *  23.2 versions from 23.2R2 before 23.2R2-S7.7;\n  *  23.4 versions from 23.4R2 before 23.4R2-S8.13;\n  *  24.2 versions before 24.2R2-S5.5;\n  *  24.4 versions before 24.4R2-S4;\n  *  25.2 versions before 25.2R2-S1;\n  *  25.4 versions before 25.4R1-S3, 25.4R2."
            }
          ],
          "exploits": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
                }
              ],
              "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "format": "CVSS",
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                  "value": "GENERAL"
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              ]
            },
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              "cvssV4_0": {
                "Automatable": "YES",
                "Recovery": "AUTOMATIC",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "baseScore": 8.2,
                "baseSeverity": "HIGH",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "LOW",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "MODERATE"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
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              "descriptions": [
                {
                  "cweId": "CWE-413",
                  "description": "CWE-413 Improper Resource Locking",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-14T16:24:53.885Z",
            "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
            "shortName": "juniper"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory"
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              "url": "https://supportportal.juniper.net/JSA112174"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S4, 25.2R2-S1, 25.4R1-S3, 25.4R2*, 26.2R1, and all subsequent releases.\u003cbr\u003e\n\n\u003cb\u003eNote:\u003c/b\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e For Junos OS releases 23.2, 23.4, and 24.2, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory.\u003c/span\u003e\n\n\u003cbr\u003e"
                }
              ],
              "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S4, 25.2R2-S1, 25.4R1-S3, 25.4R2*, 26.2R1, and all subsequent releases.\n\n\nNote: For Junos OS releases 23.2, 23.4, and 24.2, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory."
            }
          ],
          "source": {
            "advisory": "JSA112174",
            "defect": [
              "1923041"
            ],
            "discovery": "USER"
          },
          "title": "Junos OS: SRX Series: With WebFiltering enabled prolonged HTTP session load can cause a crash",
          "workarounds": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "There are no known workarounds for this issue."
                }
              ],
              "value": "There are no known workarounds for this issue."
            }
          ],
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      "cveMetadata": {
        "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "assignerShortName": "juniper",
        "cveId": "CVE-2026-102083",
        "datePublished": "2026-10-14T16:24:53.885Z",
        "dateReserved": "2026-09-28T17:37:38.548Z",
        "dateUpdated": "2026-10-14T20:26:06.046Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
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  }
}



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