---
title: "CVE-2026-33795: Juniper Networks Junos OS & Junos OS Evolved - Denial of Service"
description: "Juniper Networks Junos OS and Junos OS Evolved >= 20.4R1 contain a denial of service caused by a numeric truncation error in the rpd process triggered by BGP Prefix-SID route advertisement, letting unauthenticated network attackers cause service disruption, exploit requires network access to send BGP advertisements."
url: https://panop.io/threat-heartbeat/CVE-2026-33795/
---

# CVE-2026-33795 Juniper Networks Junos OS & Junos OS Evolved - Denial of Service

Juniper Networks Junos OS and Junos OS Evolved >= 20.4R1 contain a denial of service caused by a numeric truncation error in the rpd process triggered by BGP Prefix-SID route advertisement, letting unauthenticated network attackers cause service disruption, exploit requires network access to send BGP advertisements.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-33795)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

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

Published

14 October 2026

Updated

15 October 2026

Weakness

[CWE-197](https://cwe.mitre.org/data/definitions/197.html)

## Vendor fix

Update to the latest version beyond 20.4R1 for Junos OS and Junos OS Evolved.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-33795](https://nvd.nist.gov/vuln/detail/CVE-2026-33795)
- [https://supportportal.juniper.net/JSA112187](https://supportportal.juniper.net/JSA112187)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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