CVE-2025-30651: Junos OS and Junos OS Evolved: Receipt of a specific ICMPv6 packet causes a memory overrun leading to an rpd crash
First published: Wed Apr 09 2025(Updated: )
A Buffer Access with Incorrect Length Value vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When an attacker sends a specific ICMPv6 packet to an interface with "protocols router-advertisement" configured, rpd crashes and restarts. Continued receipt of this packet will cause a sustained DoS condition. This issue only affects systems configured with IPv6. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S10, * from 22.2 before 22.2R3-S6, * from 22.4 before 22.4R3-S4, * from 23.2 before 23.2R2-S2, * from 23.4 before 23.4R2; and Junos OS Evolved: * All versions before 21.2R3-S9-EVO, * from 21.4-EVO before 21.4R3-S10-EVO, * from 22.2-EVO before 22.2R3-S6-EVO, * from 22.4-EVO before 22.4R3-S4-EVO, * from 23.2-EVO before 23.2R2-S2-EVO, * from 23.4-EVO before 23.4R2-EVO.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | <21.2R3-S9>=undefined<21.4R3-S10>=undefined<22.2R3-S6>=undefined<22.4R3-S4>=undefined<23.2R2-S2>=undefined<23.4R2 | |
| Juniper Networks Junos OS | <21.2R3-S9-EVO>=undefined<21.4R3-S10-EVO>=undefined<22.2R3-S6-EVO>=undefined<22.4R3-S4-EVO>=undefined<23.2R2-S2-EVO>=undefined<23.4R2-EVO |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S4, 23.2R2-S2, 23.4R2, 24.2R1, and all subsequent releases. Junos OS Evolved: 21.2R3-S9-EVO, 21.4R3-S10-EVO, 22.2R3-S6-EVO, 22.4R3-S4-EVO, 23.2R2-S2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-30651?
CVE-2025-30651 has a severity rating that allows an unauthenticated, network-based attacker to cause a Denial of Service.
How do I fix CVE-2025-30651?
To fix CVE-2025-30651, upgrade to the latest versions of Junos OS or Junos OS Evolved as recommended by Juniper Networks for your specific platform.
Which versions are affected by CVE-2025-30651?
CVE-2025-30651 affects Junos OS versions prior to 21.2R3-S9, 21.4R3-S10; and Junos OS Evolved versions prior to 21.2R3-S9-EVO, 21.4R3-S10-EVO.
Can CVE-2025-30651 be exploited remotely?
Yes, CVE-2025-30651 can be exploited by an unauthenticated network-based attacker through specific ICMPv6 packets.
What are the potential impacts of CVE-2025-30651?
The potential impact of CVE-2025-30651 is a Denial of Service (DoS) condition on affected devices.
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/references
- agent/remedy
- agent/title
- agent/type
- agent/description
- agent/first-publish-date
- agent/guess-ai
- agent/software-canonical-lookup
- agent/softwarecombine
- collector/nvd-api
- source/NVD
- agent/severity
- agent/last-modified-date
- agent/source
- agent/author
- agent/tags
- agent/event
- vendor/juniper networks
- canonical/juniper junos
- canonical/juniper networks junos os