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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.

PUBLISHED Reserved 2026-03-23 | Published 2026-04-09 | Updated 2026-04-13 | Assigner juniper




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

HIGH: 7.1CVSS: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

Problem types

CWE-686 Function Call With Incorrect Argument Type

Product status

Default status
unaffected

Any version before 22.4R3-S9-EVO
affected

23.2 (semver) before 23.2R2-S6-EVO
affected

23.4 (semver) before 23.4R2-S7-EVO
affected

24.2 (semver) before 24.2R2-S4-EVO
affected

24.4 (semver) before 24.4R2-S2-EVO
affected

25.2 (semver) before 25.2R1-S2-EVO, 25.2R2-EVO
affected

References

kb.juniper.net/JSA107870 vendor-advisory

cve.org (CVE-2026-33783)

nvd.nist.gov (CVE-2026-33783)

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