What is CVE-2026-101934?

CVE-2026-101934 is a medium-severity vulnerability in Juniper Networks Junos OS, classified under Out-of-bounds Write. CVSS score: 4.4/10. Published 2026-10-14.

How severe is CVE-2026-101934?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Buffer overflow in Juniper Networks Junos OS

CVE-2026-101934

An Out-of-bounds Write vulnerability in eventd of Juniper Networks Junos OS and Junos OS Evolved allows a local attacker to cause a Denial of Service (DoS) via sending a crafted packet to the eventd relay service.

Vulnerability class: Buffer Overflow

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Juniper Networks Junos OS
Juniper Networks Junos OS Evolved — versions 23.4X100

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

supportportal.juniper.net/JSA112250 (vendor-advisory)
supportportal.juniper.net/JSA112187 (vendor-advisory)

Frequently asked questions

What is CVE-2026-101934?: CVE-2026-101934 is a medium-severity vulnerability in Juniper Networks Junos OS, classified under Out-of-bounds Write. CVSS score: 4.4/10. Published 2026-10-14.
How severe is CVE-2026-101934?: Medium severity. CVSS v3 base score is 4.4 out of 10.