{"schema_version":1,"title":"Juniper Junos OS vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 7 vulnerabilities in Juniper Junos OS: 0 in the last 7 days and 0 in the last 90 days, 7 of them critical and 7 exploited in the wild. The most recent, CVE-2025-21590, was published on 13 March 2025.","url":"https://junglewise.ai/threats/technologies/junos-os","json_url":"https://junglewise.ai/threats/technologies/junos-os.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/junos-os","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":7,"critical":7,"exploited":7,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":0},"latest":[{"cve":"CVE-2025-21590","cvss":6.7,"slug":"cve-2025-21590-juniper-junos-os-improper-isolation-or-compartmentalization","title":"Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability","severity":"critical","exploited":true,"published_at":"2025-03-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2025-21590-juniper-junos-os-improper-isolation-or-compartmentalization"},{"cve":"CVE-2023-36844","cvss":5.3,"slug":"cve-2023-36844-juniper-junos-os-ex-series-php-external-variable-modification","title":"Juniper Junos OS EX Series PHP External Variable Modification Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36844-juniper-junos-os-ex-series-php-external-variable-modification"},{"cve":"CVE-2023-36846","cvss":5.3,"slug":"cve-2023-36846-juniper-junos-os-srx-series-missing-authentication-for-critical","title":"Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36846-juniper-junos-os-srx-series-missing-authentication-for-critical"},{"cve":"CVE-2023-36845","cvss":9.8,"slug":"cve-2023-36845-juniper-junos-os-ex-series-and-srx-series-php-external-variable","title":"Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36845-juniper-junos-os-ex-series-and-srx-series-php-external-variable"},{"cve":"CVE-2023-36847","cvss":5.3,"slug":"cve-2023-36847-juniper-junos-os-ex-series-missing-authentication-for-critical","title":"Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36847-juniper-junos-os-ex-series-missing-authentication-for-critical"},{"cve":"CVE-2023-36851","cvss":5.3,"slug":"cve-2023-36851-juniper-junos-os-srx-series-missing-authentication-for-critical","title":"Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36851-juniper-junos-os-srx-series-missing-authentication-for-critical"},{"cve":"CVE-2020-1631","cvss":9.8,"slug":"cve-2020-1631-juniper-junos-os-path-traversal-vulnerability","title":"Juniper Junos OS Path Traversal Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-25T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2020-1631-juniper-junos-os-path-traversal-vulnerability"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[],"technology":{"hub":true,"name":"Juniper Junos OS","slug":"junos-os","vendor":{"name":"Juniper","slug":"juniper","url":"https://junglewise.ai/threats/vendors/juniper"},"aliases":[],"category":"operating-system","homepage":"https://www.juniper.net/us/en/products/nos/junos/junos-os.html","description":"A FreeBSD-based operating system used in Juniper Networks routing, switching, and security devices.","url":"https://junglewise.ai/threats/technologies/junos-os"},"most_severe":[{"cve":"CVE-2023-36845","cvss":9.8,"slug":"cve-2023-36845-juniper-junos-os-ex-series-and-srx-series-php-external-variable","title":"Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36845-juniper-junos-os-ex-series-and-srx-series-php-external-variable"},{"cve":"CVE-2020-1631","cvss":9.8,"slug":"cve-2020-1631-juniper-junos-os-path-traversal-vulnerability","title":"Juniper Junos OS Path Traversal Vulnerability","severity":"critical","exploited":true,"published_at":"2022-03-25T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2020-1631-juniper-junos-os-path-traversal-vulnerability"},{"cve":"CVE-2025-21590","cvss":6.7,"slug":"cve-2025-21590-juniper-junos-os-improper-isolation-or-compartmentalization","title":"Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability","severity":"critical","exploited":true,"published_at":"2025-03-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2025-21590-juniper-junos-os-improper-isolation-or-compartmentalization"},{"cve":"CVE-2023-36844","cvss":5.3,"slug":"cve-2023-36844-juniper-junos-os-ex-series-php-external-variable-modification","title":"Juniper Junos OS EX Series PHP External Variable Modification Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36844-juniper-junos-os-ex-series-php-external-variable-modification"},{"cve":"CVE-2023-36846","cvss":5.3,"slug":"cve-2023-36846-juniper-junos-os-srx-series-missing-authentication-for-critical","title":"Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36846-juniper-junos-os-srx-series-missing-authentication-for-critical"},{"cve":"CVE-2023-36847","cvss":5.3,"slug":"cve-2023-36847-juniper-junos-os-ex-series-missing-authentication-for-critical","title":"Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36847-juniper-junos-os-ex-series-missing-authentication-for-critical"},{"cve":"CVE-2023-36851","cvss":5.3,"slug":"cve-2023-36851-juniper-junos-os-srx-series-missing-authentication-for-critical","title":"Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability","severity":"critical","exploited":true,"published_at":"2023-11-13T00:00:00+00:00","url":"https://junglewise.ai/threats/cve-2023-36851-juniper-junos-os-srx-series-missing-authentication-for-critical"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}