---
id: CVE-2026-101979
title: >-
  A Stack-based Buffer Overflow vulnerability in the authd Juniper Networks
  Junos OS and Junos OS Evolved allows a network attacker with SNMP read access
  to execute code with root privileges or cause a denial of service via a
  specific SNMP…
summary: >-
  A Stack-based Buffer Overflow vulnerability in the authd Juniper Networks
  Junos OS and Junos OS Evolved allows a network attacker with SNMP read access
  to execute code with root privileges or cause a denial of service via a
  specific SNMP…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-121
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T19:17:01.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101979'
references:
  - url: 'https://supportportal.juniper.net/JSA112187'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T18:47:39.304Z'
---

## Overview

A Stack-based Buffer Overflow vulnerability in the authd Juniper Networks Junos OS and Junos OS Evolved allows a network attacker with SNMP read access to execute code with root privileges or cause a denial of service via a specific SNMP packet, when SNMP and AAA are enabled.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.