Buffer overflow in Juniper Networks Junos OS
CVE-2026-101927
A Heap-based Buffer Overflow vulnerability in eventd of Juniper Networks Junos OS and Junos OS Evolved on all platforms allows an unprivileged local attacker to cause a denial of service (DoS) or achieve privilege escalation to root via crafted IPC event messages.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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)
References
- supportportal.juniper.net/JSA112187 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-101927?
- CVE-2026-101927 is a high-severity vulnerability in Juniper Networks Junos OS, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2026-10-14.
- How severe is CVE-2026-101927?
- High severity. CVSS v3 base score is 7.8 out of 10.