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Vulnerabilities ›

CVE-2026-33797

High

CWE-20 — Weakness Type

                    Published: Apr 9, 2026                      ·  Modified: Apr 16, 2026                      ·  Source: NVD                

CVSS v3

7.4

🔗 NVD Official

📄 Description (English)

An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sending a specific genuine BGP packet in an already established BGP session to reset only that session causing a Denial of Service (DoS).

An attacker repeatedly sending the packet will sustain the Denial of Service (DoS).This issue affects Junos OS:

* 25.2 versions before 25.2R2

This issue doesn't not affected Junos OS versions before 25.2R1.

This issue affects Junos OS Evolved:
* 25.2-EVO versions before 25.2R2-EVO

This issue doesn't not affected Junos OS Evolved versions before 25.2R1-EVO.

eBGP and iBGP are affected.
IPv4 and IPv6 are affected.

🤖

Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 1

https://kb.juniper.net/JSA107850

sirt@juniper.net

📊 CVSS Score

7.4

/ 10.0 — High

📊 CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack VectorA — Adjacent

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeC — Changed

ConfidentialityN — None / Network

IntegrityN — None / Network

AvailabilityH — High

📋 Quick Facts

Severity High

CVSS Score7.4

CWECWE-20

EPSS0.02%

Exploit No

Patch ✗ No

Published 2026-04-09

Source Feed nvd

🏷️ Tags

CWE-20

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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