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Description

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).On all Junos OS and Junos OS Evolved devices, when route validation is enabled, a rare condition during BGP initial session establishment can lead to an rpd crash and restart. This occurs specifically when the connection request fails during error-handling scenario. Continued session establishment failures leads to a sustained DoS condition. This issue affects Junos OS: * All versions before 22.2R3-S6, * from 22.4 before 22.4R3-S6, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2; Junos OS Evolved: * All versions before 22.2R3-S6-EVO, * from 22.4 before 22.4R3-S6-EVO, * from 23.2 before 23.2R2-S3-EVO, * from 23.4 before 23.4R2-S4-EVO, * from 24.2 before 24.2R2-EVO.

PUBLISHED Reserved 2025-06-23 | Published 2025-07-11 | Updated 2025-07-11 | Assigner juniper




MEDIUM: 5.3CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

MEDIUM: 6.0CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A/RE:M/U:Green

Problem types

CWE-617 Reachable Assertion

Product status

Default status
unaffected

Any version before 22.2R3-S6
affected

22.4 (semver) before 22.4R3-S6
affected

23.2 (semver) before 23.2R2-S3
affected

23.4 (semver) before 23.4R2-S4
affected

24.2 (semver) before 24.2R2
affected

Default status
unaffected

Any version before 22.2R3-S6-EVO
affected

22.4 (semver) before 22.4R3-S6-EVO
affected

23.2 (semver) before 23.2R2-S3-EVO
affected

23.4 (semver) before 23.4R2-S4-EVO
affected

24.2 (semver) before 24.2R2-EVO
affected

References

supportportal.juniper.net/JSA100066 vendor-advisory

cve.org (CVE-2025-52958)

nvd.nist.gov (CVE-2025-52958)

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