CVE record · CVE-2026-57020

Junos OS: QFX10000 Series: IPv6 multicast traffic received on non-IRB interfaces causes a multicast flood

CVSS 7.1 HighEPSS 0.0027 · 19th percentile

Published by the CVE Program (CNA: juniper) at 9 Jul 2026, 21:05 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Juniper Networks	Junos OS	affected before 23.2R2-S7 custom affected 23.4 to before 23.4R2-S8 custom affected 24.2 to before 24.2R2-S4 custom affected 24.4 to before 24.4R2-S4 custom Other versions: unaffected

Identifiers: CVE-2026-57020
CNA: juniper
Weakness (CWE): CWE-754
Tags: Juniper Networks Junos OS
CWE-754
Published: 9 Jul 2026
Updated: 10 Jul 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.5	Medium	3.1	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (juniper)
7.1	High	4.0	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M	CNA (juniper)Used for this record

CISA KEV Not listed.
EPSS 0.0027, the 19th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 9 Jul 2026. New records show when each source confirmed them.

Sources

References from the CNA

supportportal.juniper.net/JSA110080 vendor-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.