CVE-2026-101934

Awaiting Analysis Awaiting Analysis - Queue

Out-of-bounds Write in Juniper Networks Junos OS eventd

Publication date: 2026-10-14

Last updated on: 2026-10-14

Assigner: Juniper Networks, Inc.

Description

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-14

Last Modified

2026-10-14

Generated

2026-10-19

AI Q&A

2026-10-15

EPSS Evaluated

2026-10-18

NVD

CVE-2026-101934

EUVD

EUVD-2026-101487

Affected Vendors & Products

Vendor	Product	Version / Range
Juniper	Networks	Junos OS 0
Juniper	Networks	Junos OS 23.4
Juniper	Networks	Junos OS 24.2
Juniper	Networks	Junos OS 24.4
Juniper	Networks	Junos OS 25.2
Juniper	Networks	Junos OS 25.4
Juniper	Networks	Junos OS 26.2
Juniper	Networks	Junos OS Evolved 0
Juniper	Networks	Junos OS Evolved 23.4
Juniper	Networks	Junos OS Evolved 24.2
Juniper	Networks	Junos OS Evolved 24.4
Juniper	Networks	Junos OS Evolved 25.2
Juniper	Networks	Junos OS Evolved 25.4
Juniper	Networks	Junos OS Evolved 26.2
Juniper	Networks	Junos OS Evolved 23.4X100
Juniper	Networks	Junos OS Evolved 25.2X100
Juniper	Networks	Junos OS Evolved 25.4X300

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an Out-of-bounds Write vulnerability in the eventd service of Juniper Networks Junos OS and Junos OS Evolved. It allows a local attacker to send a crafted packet to the eventd relay service, causing a Denial of Service (DoS).

Detection Guidance

This vulnerability is specific to Juniper Junos OS and Junos OS Evolved systems and involves an out-of-bounds write in the eventd service. Detection requires checking for unusual activity in the eventd process or network traffic patterns targeting the eventd relay service. Juniper recommends monitoring logs for eventd crashes or unexpected behavior and ensuring the latest patches are applied.

Impact Analysis

The vulnerability can cause a Denial of Service (DoS) by crashing the eventd service, leading to system unavailability or degraded performance for affected Juniper devices running Junos OS or Junos OS Evolved.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR or HIPAA as it is a local Denial of Service issue in Juniper Junos OS. Compliance impact would depend on system availability and operational controls rather than data exposure or privacy violations.

Mitigation Strategies

Apply the latest security patches from Juniper Networks for Junos OS and Junos OS Evolved to address the Out-of-bounds Write vulnerability in eventd. Monitor eventd service logs for unusual activity or crashes.

Hi! I’m here to help you understand CVE-2026-101934. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70