CVE detail

CVE-2020-1634 — CVE-2020-1634

Published 2020-04-08 · Modified 2026-06-17 · Vendor juniper · Product junos · Source nvd

HIGH

severity

CVSS-derived band

7.5

CVSS v3

0–10 scale

0.0125

EPSS probability

exploitation probability, 30d

67.0%

EPSS percentile

percentile vs all CVEs

NOT LISTED

CISA KEV

known exploited catalog

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.

Remediation

vendor remediation guidance

The following software releases have been updated to resolve this specific issue: 12.3X48-D95, and all subsequent releases.

workarounds

There are no viable workarounds for this issue.

Product	Vulnerable range	Fixed version	Advisory
Juniper Networks Junos OS	>=12.3X48-D80<12.3X48*	12.3X48*	advisory ↗

References

cvedb.io · NVD · CISA KEV · FIRST EPSS · vendor advisories (CVE Program List v5). Informational only, no warranty — verify every remediation against the vendor advisory before acting on it. This product uses data from the NVD API but is not endorsed or certified by the NVD, CISA, FIRST.org or any vendor named. CVE® is a registered trademark of The MITRE Corporation.