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CVE-2026-33789: CWE-121 Stack-based Buffer Overflow in Juniper Networks Junos OS

0
Critical
VulnerabilityCVE-2026-33789cvecve-2026-33789cwe-121
Published: 10/14/2026 (10/14/2026, 16:58:41 UTC)
Source: CVE Database V5
Vendor/Project: Juniper Networks
Product: Junos OS

Description

A Stack-based Buffer Overflow vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated BGP peer to cause a denial of service and potential root-level command execution via crafted BGP route updates when the BGP Monitoring Protocol (BMP) is enabled.

CVSS v3.1

Score 9.8critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

Juniper Networks

Junos OS

Affected versions
>=0 <23.2R2-S7.7>=23.4 <23.4R2-S8.13>=24.2 <24.2R2-S5.5>=24.4 <24.4R2-S5>=25.2 <25.2R2-S2>=25.4 <25.4R1-S3>=26.2 <26.2R1-S2

Juniper Networks

Junos OS Evolved

Affected versions
>=0 <23.2R2-S7.7-EVO>=23.4 <23.4R2-S8.11-EVO>=24.2 <24.2R2-S5.6-EVO>=24.4 <24.4R2-S5-EVO>=25.2 <25.2R2-S2-EVO>=25.4 <25.4R1-S3-EVO>=26.2 <26.2R1-S2-EVO>=25.2X100 <25.2X100-D35-EVO>=25.4X300 <25.4X300-D40-EVO=23.4X100

Technical Details

Data Version
5.2
Assigner Short Name
juniper
Date Reserved
2026-03-23T19:46:13.672Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6acfb9f02cdf04f6569934a5

Added to database: 10/14/2026, 17:20:48 UTC

Last updated: 10/14/2026, 17:20:48 UTC

Views: 1

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