CVE-2025-30657

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

An Improper Encoding or Escaping of Output vulnerability in the Sampling Route Record Daemon (SRRD) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

When a device configured for flow-monitoring receives a specific BGP update message, it is correctly processed internally by the routing protocol daemon (rpd), but when it's sent to SRRD it's encoded incorrectly which leads to a crash and momentary interruption of jflow processing until it automatically restarts. This issue does not affect traffic forwarding itself. This issue affects Junos OS:

* All versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S10, * 22.2 versions before 22.2R3-S6, * 22.4 versions before 22.4R3, * 23.2 versions before 23.2R1-S2, 23.2R2.

This issue does not affected Junos OS Evolved.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-116

Affected software

Vendor	Product	Versions
Juniper Networks	Junos OS	< 21.2R3-S9; >= 21.4, < 21.4R3-S10; >= 22.2, < 22.2R3-S6; >= 22.4, < 22.4R3; >= 23.2, < 23.2R1-S2, 23.2R2

References

https://supportportal.juniper.net/JSA96467Vendor Advisory

Timeline

Published: Apr 9, 2025
Last modified: Jun 17, 2026
NVD status: Analyzed

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