CVE-2026-33783
published 2026-04-09CVE-2026-33783: 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…
PriorityP338medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
0.24%
15.2th percentile
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
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| juniper | junos_os | — | — |
| juniper | junos_os_evolved | < 22.4 | 22.4 |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper | junos_os_evolved | — | — |
| juniper_networks | junos_os_evolved | < 22.4R3-S9-EVO | 22.4R3-S9-EVO |
| juniper_networks | junos_os_evolved | >= 23.2 < 23.2R2-S6-EVO | 23.2R2-S6-EVO |
| juniper_networks | junos_os_evolved | >= 23.4 < 23.4R2-S7-EVO | 23.4R2-S7-EVO |
| juniper_networks | junos_os_evolved | >= 24.2 < 24.2R2-S4-EVO | 24.2R2-S4-EVO |
| juniper_networks | junos_os_evolved | >= 24.4 < 24.4R2-S2-EVO | 24.4R2-S2-EVO |
| juniper_networks | junos_os_evolved | >= 25.2 < 25.2R1-S2-EVO, 25.2R2-EVO | 25.2R1-S2-EVO, 25.2R2-EVO |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv4.07.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:M/U:X
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VulDB
Juniper Junos OS Evolved up to 23.1/23.3/24.1/24.3/25.1 on PTX Sensor Interface Incorrect function call with incorrect argument type (JSA107870 / Nessus ID 305593)
vuldb·2026-04-13·CVSS 7.1
CVE-2026-33783 [HIGH] Juniper Junos OS Evolved up to 23.1/23.3/24.1/24.3/25.1 on PTX Sensor Interface Incorrect function call with incorrect argument type (JSA107870 / Nessus ID 305593)
A vulnerability, which was classified as critical, has been found in Juniper Junos OS Evolved up to 23.1/23.3/24.1/24.3/25.1 on PTX. The impacted element is an unknown function of the component Sensor Interface. The manipulation of the argument Incorrect leads to function call with incorrect argument type.
This vulnerability is listed as CVE-2026-33783. The attack may be initiated remotely. There is no available exploit.
It is advisable to upgrade the affected component.
GHSA
GHSA-q83c-r2qf-fvp6: A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network
ghsa_unreviewed·2026-04-10
CVE-2026-33783 [HIGH] CWE-686 GHSA-q83c-r2qf-fvp6: A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network
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
Juniper
CVE-2026-33783: A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network
vendor_juniper·2026-04-09·CVSS 6.5
CVE-2026-33783 [MEDIUM] CWE-686 CVE-2026-33783: A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network
CVE-2026-33783: 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
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-04-09
Published