What is CVE-2026-33800?

CVE-2026-33800 is a medium-severity vulnerability in Juniper Networks Junos Os, classified under CWE-606. CVSS score: 6.5/10. Published 2026-07-09.

How severe is CVE-2026-33800?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Juniper Networks Junos Os

CVE-2026-33800

An Unchecked Input for Loop Condition vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on MX Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).Micro-BFD session flaps gen…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Juniper Networks Junos Os — versions 0, 23.4, 24.2

Weakness classification (CWE)

CWE-606

References

sirt@juniper.net (vendor-advisory)

Frequently asked questions

What is CVE-2026-33800?: CVE-2026-33800 is a medium-severity vulnerability in Juniper Networks Junos Os, classified under CWE-606. CVSS score: 6.5/10. Published 2026-07-09.
How severe is CVE-2026-33800?: Medium severity. CVSS v3 base score is 6.5 out of 10.