What is CVE-2026-33778?

CVE-2026-33778 is a high-severity vulnerability in Juniper Networks Junos Os, classified under CWE-1286. CVSS score: 7.5/10. Published 2026-04-09.

How severe is CVE-2026-33778?

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

Vulnerability in Juniper Networks Junos Os

CVE-2026-33778

An Improper Validation of Syntactic Correctness of Input vulnerability in the IPsec library used by kmd and iked of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a complet…

EPSS: 0.001 (35.0th percentile) — read the EPSS interpretation.

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 0, 23.2, 23.4

Weakness classification (CWE)

CWE-1286

References

kb.juniper.net/JSA107868 (vendor-advisory)

Frequently asked questions

What is CVE-2026-33778?: CVE-2026-33778 is a high-severity vulnerability in Juniper Networks Junos Os, classified under CWE-1286. CVSS score: 7.5/10. Published 2026-04-09.
How severe is CVE-2026-33778?: High severity. CVSS v3 base score is 7.5 out of 10.