CVE record · CVE-2026-57022

Junos OS: MX Series with SPC3, SRX Series: Specific packet in response to a TCP connection establishment by the affected device can crash the PFE

CVSS 8.2 HighEPSS 0.0040 · 34th percentile

Published by the CVE Program (CNA: juniper) at 9 Jul 2026, 21:06 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-S4 custom affected 23.4 to before 23.4R2-S5 custom affected 24.2 to before 24.2R2 custom Other versions: unaffected

Identifiers: CVE-2026-57022
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
5.9	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (juniper)
8.2	High	4.0	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A/RE:M	CNA (juniper)Used for this record

CISA KEV Not listed.
EPSS 0.0040, the 34th 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/JSA110082 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.