{"id":"CVE-2020-1634","aliases":["EUVD-2020-12502","GHSA-h7f7-r6mm-7w8h"],"status":"published","title":"Junos OS: High-End SRX Series: Multicast traffic might cause all FPCs to reset.","description":"On High-End SRX Series devices, in specific configurations and when specific networking events or operator actions occur, an SPC receiving genuine multicast traffic may core. Subsequently, all FPCs in a chassis may reset causing a Denial of Service. This issue affects both IPv4 and IPv6. This issue affects: Juniper Networks Junos OS 12.3X48 version 12.3X48-D80 and later versions prior to 12.3X48-D95 on High-End SRX Series. This issue does not affect Branch SRX Series devices.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01284,"percentile":0.70344,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-190"],"published":"2020-04-08T19:26:00Z","modified":"2026-06-17T03:02:02Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://kb.juniper.net/JSA11014","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1634"},{"url":"https://github.com/advisories/GHSA-h7f7-r6mm-7w8h"}],"sources":{"cve":[{"id":"CVE-2020-1634","title":"Junos OS: High-End SRX Series: Multicast traffic might cause all FPCs to reset.","description":"On High-End SRX Series devices, in specific configurations and when specific networking events or operator actions occur, an SPC receiving genuine multicast traffic may core. Subsequently, all FPCs in a chassis may reset causing a Denial of Service. This issue affects both IPv4 and IPv6. This issue affects: Juniper Networks Junos OS 12.3X48 version 12.3X48-D80 and later versions prior to 12.3X48-D95 on High-End SRX Series. This issue does not affect Branch SRX Series devices.","status":"published","published":"2020-04-08T19:26:00.74Z","modified":"2024-09-16T22:02:21.899Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:35:56.638833Z"}],"euvd":[{"id":"EUVD-2020-12502","description":"On High-End SRX Series devices, in specific configurations and when specific networking events or operator actions occur, an SPC receiving genuine multicast traffic may core. Subsequently, all FPCs in a chassis may reset causing a Denial of Service. This issue affects both IPv4 and IPv6. This issue affects: Juniper Networks Junos OS 12.3X48 version 12.3X48-D80 and later versions prior to 12.3X48-D95 on High-End SRX Series. This issue does not affect Branch SRX Series devices.","status":"published","published":"2020-04-08T19:26:00Z","modified":"2024-09-16T22:02:21Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:55:06.207566Z"}],"ghsa":[{"id":"GHSA-h7f7-r6mm-7w8h","title":"On High-End SRX Series devices, in specific configurations and when specific networking events or...","description":"On High-End SRX Series devices, in specific configurations and when specific networking events or operator actions occur, an SPC receiving genuine multicast traffic may core. Subsequently, all FPCs in a chassis may reset causing a Denial of Service. This issue affects both IPv4 and IPv6. This issue affects: Juniper Networks Junos OS 12.3X48 version 12.3X48-D80 and later versions prior to 12.3X48-D95 on High-End SRX Series. This issue does not affect Branch SRX Series devices.","status":"published","published":"2022-05-24T17:13:52Z","modified":"2023-01-29T05:02:09Z","updated_at":"2026-11-02T14:45:00.532867Z"}],"nvd":[{"id":"CVE-2020-1634","description":"On High-End SRX Series devices, in specific configurations and when specific networking events or operator actions occur, an SPC receiving genuine multicast traffic may core. Subsequently, all FPCs in a chassis may reset causing a Denial of Service. This issue affects both IPv4 and IPv6. This issue affects: Juniper Networks Junos OS 12.3X48 version 12.3X48-D80 and later versions prior to 12.3X48-D95 on High-End SRX Series. This issue does not affect Branch SRX Series devices.","status":"published","published":"2020-04-08T20:15:14.31Z","modified":"2026-06-17T03:02:02.973Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:05:57.678762Z"}]}}