What is CVE-2026-33781?

CVE-2026-33781 is a medium-severity vulnerability in Juniper Networks Junos Os, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.5/10. Published 2026-04-09.

How severe is CVE-2026-33781?

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

Vulnerability in Juniper Networks Junos Os

CVE-2026-33781

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX and QFX Series devices allow an unauthenticated, adjacent attacker to cause a complete…

EPSS: 0.000 (6.2th percentile) — read the EPSS interpretation.

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 24.4, 25.2, 0

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

kb.juniper.net/JSA107869 (vendor-advisory)

Frequently asked questions

What is CVE-2026-33781?: CVE-2026-33781 is a medium-severity vulnerability in Juniper Networks Junos Os, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 6.5/10. Published 2026-04-09.
How severe is CVE-2026-33781?: Medium severity. CVSS v3 base score is 6.5 out of 10.