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CVE-2025-30659— Junos OS: SRX Series: A device configured for vector routing crashes when receiving malformed traffic

Quick assessment

Affected
Juniper Networks Junos OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Juniper Networks Junos OS SRX是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS SRX存在安全漏洞，该漏洞源于长度参数处理不一致，可能导致拒绝服务。

CVSS 7.5 · High EPSS 0.40% · P33
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I. Basic Information for CVE-2025-30659

Vulnerability Information
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Vulnerability Title
Junos OS: SRX Series: A device configured for vector routing crashes when receiving malformed traffic
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Handling of Length Parameter Inconsistency vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). When a device configured for Secure Vector Routing (SVR) receives a specifically malformed packet the PFE will crash and restart. This issue affects Junos OS on SRX Series: * All 21.4 versions, * 22.2 versions before 22.2R3-S6, * 22.4 versions before 22.4R3-S6, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2. This issue does not affect versions before 21.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
长度参数不一致性处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS SRX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS SRX是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS SRX存在安全漏洞，该漏洞源于长度参数处理不一致，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Juniper Networks Junos OS 21.4R1 ~ 21.4* -

II. Public POCs for CVE-2025-30659

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III. Intelligence Information for CVE-2025-30659

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Same Patch Batch · Juniper Networks · 2025-04-09 · 21 CVEs total

CVE-2025-30658 7.5 HIGH Junos OS: SRX Series: On devices with Anti-Virus enabled, malicious server responses will
CVE-2025-30660 7.5 HIGH Junos OS: MX Series: Decapsulation of specific GRE packets leads to PFE reset
CVE-2025-30656 7.5 HIGH Junos OS: MX Series, SRX Series: Processing of specific SIP INVITE messages by the SIP ALG
CVE-2025-21594 7.5 HIGH Junos OS: MX Series: In DS-lite and NAT scenario receipt of crafted IPv6 traffic causes po
CVE-2025-21601 7.5 HIGH Junos OS: SRX and EX Series, MX240, MX480, MX960, QFX5120 Series: When web management is e
CVE-2025-30644 7.5 HIGH Junos OS: EX2300, EX3400, EX4000 Series, QFX5k Series: Receipt of a specific DHCP packet c
CVE-2025-30645 7.5 HIGH Junos OS: SRX Series: Transmission of specific control traffic sent out of a DS-Lite tunne
CVE-2025-30651 7.5 HIGH Junos OS and Junos OS Evolved: Receipt of a specific ICMPv6 packet causes a memory overrun
CVE-2025-30649 7.5 HIGH Junos OS: MX240, MX480, MX960 with SPC3: An attacker sending specific packets will cause a
CVE-2025-21591 7.4 HIGH Junos OS: An unauthenticated adjacent attacker sending a malformed DHCP packet causes jdhc
CVE-2025-30648 7.4 HIGH Junos OS and Junos OS Evolved: Receipt of a specifically malformed DHCP packet causes jdhc
CVE-2025-30647 6.5 MEDIUM Junos OS: MX Series: Subscriber login/logout activity will lead to a memory leak
CVE-2025-30646 6.5 MEDIUM Junos OS and Junos OS Evolved: Receipt of a malformed LLDP TLV results in l2cpd crash
CVE-2025-30653 6.5 MEDIUM Junos OS and Junos OS Evolved: LSP flap in a specific MPLS scenario leads to rpd crash
CVE-2025-21595 6.5 MEDIUM Junos OS and Junos OS Evolved: In an EVPN-VXLAN scenario specific ARP or NDP packets cause
CVE-2025-30652 5.5 MEDIUM Junos OS and Junos OS Evolved: Executing a specific CLI command when asregex-optimized is
CVE-2025-30654 5.5 MEDIUM Junos OS and Junos OS Evolved: A local, low privileged user can access sensitive informati
CVE-2025-30655 5.5 MEDIUM Junos OS and Junos OS Evolved: A specific CLI command will cause an RPD crash when rib-sha
CVE-2025-21597 5.3 MEDIUM Junos OS and Junos OS Evolved: When BGP rib-sharding and update-threading are configured a
CVE-2025-30657 5.3 MEDIUM Junos OS: Processing of a specific BGP update causes the SRRD process to crash

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-130

V. Comments for CVE-2025-30659

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