CVE-2026-33783
Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
09/04/2026
Last modified:
09/04/2026
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).<br />
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If colored SRTE policy tunnels are provisioned via PCEP, and gRPC is used to monitor traffic in these tunnels, evo-aftmand crashes and doesn&#39;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.<br />
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This issue affects Junos OS Evolved on PTX Series: <br />
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<br />
<br />
* all versions before 22.4R3-S9-EVO,<br />
* 23.2 versions before 23.2R2-S6-EVO,<br />
* 23.4 versions before 23.4R2-S7-EVO,<br />
* 24.2 versions before 24.2R2-S4-EVO,<br />
* 24.4 versions before 24.4R2-S2-EVO,<br />
* 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO.
Impact
Base Score 4.0
7.10
Severity 4.0
HIGH
Base Score 3.x
6.50
Severity 3.x
MEDIUM