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CVE-2026-57032— Junos OS: EX Series: Subscribing to an unsupported telemetry sensor path causes fxpc process crash

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是美国Juniper Networks公司的一款专为路由器、交换机和防火墙等物理及虚拟设备打造的网络操作系统。 Juniper Networks Junos OS存在输入验证错误漏洞，该漏洞源于包转发引擎（pfe）中对未定义参数的不当处理，可能导致具有低权限的经过身份验证的攻击者造成拒绝服务（DoS）。以下版本受到影响：23.2R2-S7之前版本、23.4R2-S8之前版本、24.2R2-S5之前版本和24.4R2之前版本。

CVSS 6.5 · Medium EPSS 0.42% · P34

Affected Version Matrix 4

VendorProduct Version RangeStatus
Juniper Networks Junos OS < 23.2R2-S7 affected
23.4< 23.4R2-S8 affected
24.2< 24.2R2-S5 affected
24.4< 24.4R2 affected
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I. Basic Information for CVE-2026-57032

Vulnerability Information
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Vulnerability Title
Junos OS: EX Series: Subscribing to an unsupported telemetry sensor path causes fxpc process crash
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices allows an authenticated attacker with low privileges to cause a Denial-of-Service (DoS). If an attempt is made to subscribe to an unsupported telemetry sensor path on EX2300, EX3400, EX4000, EX4100 and EX4400 via gRPC, this causes the FPC to crash. This leads to a complete service outage until the module has automatically restarted.  The following log message can be seen when this issue happens: agentd[<PID>]: AGENTD_RESOURCE_NOT_FOUND: No resource name found for <sensor> This issue affects Junos OS on EX2300, EX3400, EX4000, EX4100 and EX4400 devices: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S5, * 24.4 versions before 24.4R2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对未定义参数处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Juniper Networks Junos OS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS是美国Juniper Networks公司的一款专为路由器、交换机和防火墙等物理及虚拟设备打造的网络操作系统。 Juniper Networks Junos OS存在输入验证错误漏洞，该漏洞源于包转发引擎（pfe）中对未定义参数的不当处理，可能导致具有低权限的经过身份验证的攻击者造成拒绝服务（DoS）。以下版本受到影响：23.2R2-S7之前版本、23.4R2-S8之前版本、24.2R2-S5之前版本和24.4R2之前版本。
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 0 ~ 23.2R2-S7 -

II. Public POCs for CVE-2026-57032

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III. Intelligence Information for CVE-2026-57032

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Vendor Advisories for CVE-2026-57032 (1)

Same Patch Batch · Juniper Networks · 2026-07-09 · 22 CVEs total

CVE-2026-57026 7.5 HIGH Junos OS: MX Series with SPC3, SRX Series: Processing of a specifically malformed SIP invi
CVE-2026-57023 7.5 HIGH Junos OS: MX with SPC3, SRX Series: A specifically malformed TCP packet causes a flowd cra
CVE-2026-57028 7.3 HIGH Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacke
CVE-2026-33800 6.5 MEDIUM Junos OS: MX Series: In a VC scenario a high rate of micro-BFD session flaps will cause an
CVE-2026-33801 6.5 MEDIUM Junos OS and Junos OS Evolved: When a specifically malformed BGP route update is received
CVE-2026-33803 6.5 MEDIUM Junos OS Evolved: A port which has been inadvertently exposed can be reached by an attacke
CVE-2026-57027 6.5 MEDIUM Junos OS: EX4100 Series, EX4400: With sFlow configured in a VC scenario multicast traffic
CVE-2026-57019 6.5 MEDIUM Junos OS: MX Series: Specific traffic causes an FPC to reset
CVE-2026-57020 6.5 MEDIUM Junos OS: QFX10000 Series: IPv6 multicast traffic received on non-IRB interfaces causes a
CVE-2026-33794 5.9 MEDIUM Junos OS Evolved: PTX Series: Receipt of repeated ECMP routing updates results in PFE cras
CVE-2026-57022 5.9 MEDIUM Junos OS: MX Series with SPC3, SRX Series: Specific packet in response to a TCP connection
CVE-2026-57030 5.9 MEDIUM Junos OS: SRX Series: Flow sessions are not getting cleared leading to a DoS
CVE-2026-57054 5.8 MEDIUM Junos OS: MX Series: Web filtering doesn't block specifically formatted URLs
CVE-2026-57025 5.5 MEDIUM Junos OS and Junos OS Evolved: EX Series, QFX Series, MX Series: A specific 'show l2-learn
CVE-2026-33802 5.5 MEDIUM Junos OS: EX Series: Unauthorized users can execute service-impacting CLI command
CVE-2026-57021 5.3 MEDIUM Junos OS: SRX Series: If VPN compliance-check is configured an attacker can cause http-gk
CVE-2026-57024 5.3 MEDIUM Junos OS: MX with SPC3, SRX Series: Repeated VPN negotiation failures will eventually caus
CVE-2026-57029 5.3 MEDIUM Junos OS Evolved: QFX Series: When sFlow collector reachability changes evo-pfemand proces
CVE-2026-57031 4.7 MEDIUM Junos OS: MX Series: For subscribers configured on static interfaces, input filters are no
CVE-2026-21901 4.4 MEDIUM Junos OS and Junos OS Evolved: Configuration of a specific SSH option results in mgd crash

Showing top 20 of 22 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-236

V. Comments for CVE-2026-57032

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