# CVE-2026-33783

## Summary

- **CVE ID:** CVE-2026-33783
- **Severity:** HIGH
- **CVSS Score:** 7.1 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M)
- **CWE:** CWE-686
- **Published:** Apr 9, 2026
- **Last Modified:** Apr 13, 2026

## Description

A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network-based, authenticated attacker with low privileges to cause a complete Denial of Service (DoS).


If colored SRTE policy tunnels are provisioned via PCEP, and gRPC is used to monitor traffic in these tunnels, evo-aftmand crashes and doesn't restart which leads to a complete and persistent service impact. The system has to be manually restarted to recover. The issue is seen only when the Originator ASN field in PCEP contains a value larger than 65,535 (32-bit ASN). The issue is not reproducible when SRTE policy tunnels are statically configured.


This issue affects Junos OS Evolved on PTX Series: 



  *  all versions before 22.4R3-S9-EVO,
  *  23.2 versions before 23.2R2-S6-EVO,
  *  23.4 versions before 23.4R2-S7-EVO,
  *  24.2 versions before 24.2R2-S4-EVO,
  *  24.4 versions before 24.4R2-S2-EVO,
  *  25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO.

## Affected Products

- Juniper Networks — Junos OS Evolved (0)
- Juniper Networks — Junos OS Evolved (23.2)
- 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)

## References

- [CNA](https://kb.juniper.net/JSA107870)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 15.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._