What is CVE-2026-57023?

CVE-2026-57023 is a high-severity vulnerability in Juniper Networks Junos Os, classified under Improper Validation of Specified Quantity in Input. CVSS score: 7.5/10. Published 2026-07-09.

How severe is CVE-2026-57023?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Juniper Networks Junos Os

CVE-2026-57023

An Improper Validation of Specified Quantity in Input vulnerability in the TCP proxy plugin of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial of…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Juniper Networks Junos Os — versions 23.4, 24.2, 24.4

Weakness classification (CWE)

CWE-1284 — Improper Validation of Specified Quantity in Input

References

sirt@juniper.net (vendor-advisory)

Frequently asked questions

What is CVE-2026-57023?: CVE-2026-57023 is a high-severity vulnerability in Juniper Networks Junos Os, classified under Improper Validation of Specified Quantity in Input. CVSS score: 7.5/10. Published 2026-07-09.
How severe is CVE-2026-57023?: High severity. CVSS v3 base score is 7.5 out of 10.