{
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              "content": {
                "id": "CVE-2025-21590",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-14T03:55:21.999597Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2025-03-13",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21590"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-26T19:09:35.631Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21590"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2025-03-13T00:00:00.000Z",
            "value": "CVE-2025-21590 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Junos OS",
          "vendor": "Juniper Networks",
          "versions": [
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              "lessThan": "21.2R3-S9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "21.4R3-S10",
              "status": "affected",
              "version": "21.4",
              "versionType": "semver"
            },
            {
              "lessThan": "22.2R3-S6",
              "status": "affected",
              "version": "22.2",
              "versionType": "semver"
            },
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              "version": "22.4",
              "versionType": "semver"
            },
            {
              "lessThan": "23.2R2-S3",
              "status": "affected",
              "version": "23.2",
              "versionType": "semver"
            },
            {
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              "status": "affected",
              "version": "23.4",
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            },
            {
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              "status": "affected",
              "version": "24.2",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Juniper SIRT would like to acknowledge and thank Matteo Memelli from Amazon for responsibly reporting this issue. Note: Amazon found the issue during internal security research and not due to exploitation."
        }
      ],
      "datePublic": "2025-03-12T14:00:00.000Z",
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              "value": "An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device.\u003cbr\u003e\u003cbr\u003eA local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device.\u003cbr\u003eThis issue is not exploitable from the Junos CLI.\u003cbr\u003e\u003cp\u003eThis issue affects Junos OS:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions before 21.2R3-S9,\u003c/li\u003e\u003cli\u003e21.4 versions before 21.4R3-S10,\u0026nbsp;\u003c/li\u003e\u003cli\u003e22.2 versions before 22.2R3-S6,\u0026nbsp;\u003c/li\u003e\u003cli\u003e22.4 versions before 22.4R3-S6,\u0026nbsp;\u003c/li\u003e\u003cli\u003e23.2 versions before 23.2R2-S3,\u0026nbsp;\u003c/li\u003e\u003cli\u003e23.4 versions before 23.4R2-S4,\u003c/li\u003e\u003cli\u003e24.2 versions before 24.2R1-S2, 24.2R2.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e"
            }
          ],
          "value": "An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device.\n\nA local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device.\nThis issue is not exploitable from the Junos CLI.\nThis issue affects Junos OS:\u00a0\n\n\n\n  *  All versions before 21.2R3-S9,\n  *  21.4 versions before 21.4R3-S10,\u00a0\n  *  22.2 versions before 22.2R3-S6,\u00a0\n  *  22.4 versions before 22.4R3-S6,\u00a0\n  *  23.2 versions before 23.2R2-S3,\u00a0\n  *  23.4 versions before 23.4R2-S4,\n  *  24.2 versions before 24.2R1-S2, 24.2R2."
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              "value": "At least one instance of malicious exploitation has been reported to the Juniper SIRT. Customers are encouraged to upgrade to a fixed release as soon as it\u0027s available and in the meantime take steps to mitigate this vulnerability."
            }
          ],
          "value": "At least one instance of malicious exploitation has been reported to the Juniper SIRT. Customers are encouraged to upgrade to a fixed release as soon as it\u0027s available and in the meantime take steps to mitigate this vulnerability."
        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.7,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-653",
              "description": "CWE-653 Improper Isolation or Compartmentalization",
              "lang": "en",
              "type": "CWE"
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          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-06T08:00:02.011Z",
        "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "shortName": "juniper"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://supportportal.juniper.net/JSA93446"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://cloud.google.com/blog/topics/threat-intelligence/china-nexus-espionage-targets-juniper-routers"
        }
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              "value": "\u003cp\u003eThe following software releases have been updated to resolve this specific issue: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R1-S2, 24.2R2, 24.4R1, and all subsequent releases.\u003c/p\u003e\n\u003cp\u003e\u0026nbsp;\u003c/p\u003e\n\u003cp\u003ePlease note that this issue is not fixed for all platforms in the releases specified in the solution section.\u003c/p\u003e\n\u003cp\u003eFor the following products the fix is only available in these releases:\u003c/p\u003e\n\u003cp\u003eSRX300 Series\u2003\u0026nbsp; 21.2R3-S9, 23.4R2-S5*, 24.4R1\u003c/p\u003e\n\u003cp\u003eSRX550HM\u2003\u2003\u2003 22.2R3-S7*\u003c/p\u003e\n\u003cp\u003eEX4300 Series \u0026nbsp; \u0026nbsp; 21.4R3-S11*  (except EX4300-48MP which has fixes available as indicated in the solution)\u003c/p\u003e\n\u003cp\u003eEX4600  \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; 21.4R3-S11*  (except EX4650 which has fixes available as indicated in the solution)\u003c/p\u003e\n\u003cp\u003eACX1000, ACX1100, ACX2100, ACX2200, ACX4000,\u003c/p\u003e\n\u003cp\u003eACX500  \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp;21.2R3-S9\u003c/p\u003e\n\u003cp\u003eMX104  \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; \u0026nbsp; 21.2R3-S9\u003c/p\u003e\n\u003cp\u003e* Future Release\u0026nbsp;\u003c/p\u003e"
            }
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          "value": "The following software releases have been updated to resolve this specific issue: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R1-S2, 24.2R2, 24.4R1, and all subsequent releases.\n\n\n\u00a0\n\n\nPlease note that this issue is not fixed for all platforms in the releases specified in the solution section.\n\n\nFor the following products the fix is only available in these releases:\n\n\nSRX300 Series\u2003\u00a0 21.2R3-S9, 23.4R2-S5*, 24.4R1\n\n\nSRX550HM\u2003\u2003\u2003 22.2R3-S7*\n\n\nEX4300 Series \u00a0 \u00a0 21.4R3-S11*  (except EX4300-48MP which has fixes available as indicated in the solution)\n\n\nEX4600  \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 21.4R3-S11*  (except EX4650 which has fixes available as indicated in the solution)\n\n\nACX1000, ACX1100, ACX2100, ACX2200, ACX4000,\n\n\nACX500  \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a021.2R3-S9\n\n\nMX104  \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 21.2R3-S9\n\n\n* Future Release"
        }
      ],
      "source": {
        "advisory": "JSA93446",
        "defect": [
          "1838460",
          "1872010"
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        "discovery": "USER"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2025-03-12T14:00:00.000Z",
          "value": "Initial Publication"
        },
        {
          "lang": "en",
          "time": "2025-03-12T15:16:00.000Z",
          "value": "Corrected hotlinks for CVSS assessments"
        },
        {
          "lang": "en",
          "time": "2025-03-14T14:00:00.000Z",
          "value": "Rephrased sentences on Amazon involvement to reduce the chance for confusion"
        },
        {
          "lang": "en",
          "time": "2025-04-09T08:17:00.000Z",
          "value": "Updated solution section to clarify which platforms are not fixed in all but only in specific releases"
        },
        {
          "lang": "en",
          "time": "2025-04-14T07:15:00.000Z",
          "value": "For the products/platforms specifically mentioned in the solution section: Please note that Junos OS version 21.2R3-S9.20, which was made available last week, does not address the issue completely. We\u0027ll publish an updated version with the complete fix and update this advisory as soon as possible."
        },
        {
          "lang": "en",
          "time": "2025-05-06T08:00:00.000Z",
          "value": "For the products/platforms specifically mentioned in the solution section: Please note that Junos OS version 21.2R3-S9.21 has been publish with the complete fix."
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      "title": "Junos OS: An local attacker with shell access can execute arbitrary code",
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    "assignerShortName": "juniper",
    "cveId": "CVE-2025-21590",
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    "dateReserved": "2024-12-26T14:47:11.667Z",
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