CVE-2026-33783
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
7.1
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-04-09 22:16:27.590000
Last modified
2026-10-26 22:10:00.163000
View original CVE JSON
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"id": "CVE-2026-33783",
"sourceIdentifier": "[email protected]",
"published": "2026-04-09T22:16:27.590",
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"value": "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).\n\n\nIf 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.\n\n\nThis issue affects Junos OS Evolved on PTX Series: \n\n\n\n * all versions before 22.4R3-S9-EVO,\n * 23.2 versions before 23.2R2-S6-EVO,\n * 23.4 versions before 23.4R2-S7-EVO,\n * 24.2 versions before 24.2R2-S4-EVO,\n * 24.4 versions before 24.4R2-S2-EVO,\n * 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO."
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"matchCriteriaId": "5BD05415-9F94-4EB8-805A-C9C0FFA9D0DF"
},
{
"vulnerable": false,
"criteria": "cpe:2.3:h:juniper:ptx10004:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C432E543-37F5-4CA0-B239-2B97C6A16907"
},
{
"vulnerable": false,
"criteria": "cpe:2.3:h:juniper:ptx10008:-:*:*:*:*:*:*:*",
"matchCriteriaId": "65A64A26-4606-4D33-8958-5A3B7FFC4CDB"
},
{
"vulnerable": false,
"criteria": "cpe:2.3:h:juniper:ptx10016:-:*:*:*:*:*:*:*",
"matchCriteriaId": "1879799F-18B2-4958-AA90-FD19348C889F"
},
{
"vulnerable": false,
"criteria": "cpe:2.3:h:juniper:ptx12008:-:*:*:*:*:*:*:*",
"matchCriteriaId": "90D4D075-6304-47C8-8F2C-6F5DB4617DBD"
}
]
}
]
}
],
"references": [
{
"url": "https://kb.juniper.net/JSA107870",
"source": "[email protected]",
"tags": [
"Mitigation",
"Vendor Advisory"
]
}
]
}