Function call with incorrect argument type in Junos OS Evolved - CVE-2026-33783
Published: April 8, 2026
Vulnerability identifier: #VU125520
CSH Severity: Medium
CVSS v4: 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:N]
CVE-ID: CVE-2026-33783
CWE-ID: CWE-686
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to function call with incorrect argument type error in the sensor interface. A remote user can 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.
Affected software
Junos OS Evolved
How to mitigate CVE-2026-33783
Install updates from vendor's website.
Junos OS Evolved - addressed in versions 22.4R3-S9-EVO, 23.2R2-S6-EVO, 23.4R2-S7-EVO, 24.2R2-S4-EVO, 24.4R2-S2-EVO, 25.2R1-S2-EVO, 25.2R2-EVO, 25.4R1-EVO