What is CVE-2026-33773?

CVE-2026-33773 is a medium-severity vulnerability in Juniper Ex2300, classified under CWE-1419. CVSS score: 5.8/10. Published 2026-04-09.

How severe is CVE-2026-33773?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Vulnerability in Juniper Ex2300

CVE-2026-33773

An Incorrect Initialization of Resource vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX Series and QFX Series device allows an unauthenticated, network-based attacker to cause an integrity im…

EPSS: 0.002 (10.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.

Affected products

Juniper Ex2300
Juniper Ex2300-c
Juniper Ex3400
Juniper Ex4000
Juniper Ex4100
Juniper Ex4100-f
Juniper Ex4100-h
Juniper Ex4300
Juniper Ex4400
Juniper Ex4600

Weakness classification (CWE)

CWE-1419

References

sirt@juniper.net (vendor-advisory, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33773?: CVE-2026-33773 is a medium-severity vulnerability in Juniper Ex2300, classified under CWE-1419. CVSS score: 5.8/10. Published 2026-04-09.
How severe is CVE-2026-33773?: Medium severity. CVSS v3 base score is 5.8 out of 10.