// For flags

CVE-2025-30651

Junos OS and Junos OS Evolved: Receipt of a specific ICMPv6 packet causes a memory overrun leading to an rpd crash

Severity Score

8.7
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

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.

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.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
None
None
Integrity
None
None
Availability
High
Low
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-03-24 CVE Reserved
  • 2025-04-09 CVE Published
  • 2025-04-09 CVE Updated
  • 2025-04-10 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-805: Buffer Access with Incorrect Length Value
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Juniper Networks
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Junos OS
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< 21.2R3-S9
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en
Affected
Juniper Networks
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Junos OS
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>= 21.4 < 21.4R3-S10
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en
Affected
Juniper Networks
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Junos OS
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>= 22.2 < 22.2R3-S6
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en
Affected
Juniper Networks
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Junos OS
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>= 22.4 < 22.4R3-S4
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en
Affected
Juniper Networks
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Junos OS
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>= 23.2 < 23.2R2-S2
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en
Affected
Juniper Networks
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Junos OS
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>= 23.4 < 23.4R2
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en
Affected
Juniper Networks
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Junos OS Evolved
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< 21.2R3-S9-EVO
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Affected
Juniper Networks
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Junos OS Evolved
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>= 21.4-EVO < 21.4R3-S10-EVO
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Affected
Juniper Networks
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Junos OS Evolved
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>= 22.2-EVO < 22.2R3-S6-EVO
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Affected
Juniper Networks
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Junos OS Evolved
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>= 22.4-EVO < 22.4R3-S4-EVO
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Affected
Juniper Networks
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Junos OS Evolved
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>= 23.2-EVO < 23.2R2-S2-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.2-EVO < 23.2R2-S2-EVO"
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Affected
Juniper Networks
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Junos OS Evolved
Search vendor "Juniper Networks" for product "Junos OS Evolved"
>= 23.4-EVO < 23.4R2-EVO
Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.4-EVO < 23.4R2-EVO"
en
Affected