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CVE-2026-103402— Session Smart Router and Session Smart Conductor: Lack of integrity verification in cache files causes arbitrary code execution and privilege escalation

Quick assessment

Affected

Juniper Networks Session Smart Router

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 Session Smart Router 和 Session Smart Conductor 中的 PCLI 组件存在“数据真实性验证不足”的漏洞。该漏洞允许拥有模型缓存目录写入权限的攻击者，通过处理未经验证的缓存文件，执行任意代码并提升权限。

CVSS 8.8 · High Updated Oct 29, 2026

Possible ATT&CK Techniques 3 AI

T1203 · Exploitation for Client Execution T1055 · Process Injection T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

Vendor	Product	Version Range	Status
Juniper Networks	Session Smart Conductor	`< 7.0.5`	affected
		`7.1.0< 7.1.7`	affected
		`7.2.0< 7.2.3`	affected
Juniper Networks	Session Smart Router	`< 7.0.5`	affected
		`7.1.0< 7.1.7`	affected
		`7.2.0< 7.2.3`	affected

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Vulnerability Information

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Vulnerability Title

Session Smart Router and Session Smart Conductor: Lack of integrity verification in cache files causes arbitrary code execution and privilege escalation

Source: CVE Program / CVE List V5

Vulnerability Description

An Insufficient Verification of Data Authenticity vulnerability in PCLI in Juniper Networks Session Smart Router and Session Smart Conductor allows an attacker with write access to the model cache directory to execute arbitrary code and escalate privileges via the processing of unverified cache files.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

对数据真实性的验证不充分

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Juniper Networks	Session Smart Router	0 ~ 7.0.5	-
Juniper Networks	Session Smart Conductor	0 ~ 7.0.5	-

II. Public POCs for CVE-2026-103402

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-103402

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Other References for CVE-2026-103402 (1)

https://supportportal.juniper.net/JSA112183 vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-103402

Same Patch Batch · Juniper Networks · 2026-10-28 · 18 CVEs total

CVE-2026-103409	9.8 CRITICAL	Session Smart Router: An attacker obtains administrative privileges when an unauthenticate
CVE-2026-103406	9.8 CRITICAL	Session Smart Conductor: An unauthenticated attacker causes arbitrary command execution du
CVE-2026-103408	8.8 HIGH	Session Smart Router: An attacker-controlled input causes remote code execution when parsi
CVE-2026-103407	8.8 HIGH	Session Smart Router and Session Smart Conductor: Unsanitized input allows arbitrary file
CVE-2026-103401	8.8 HIGH	Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary file
CVE-2026-106079	8.8 HIGH	Session Smart Router and Session Smart Conductor: Improper validation of a field causes pr
CVE-2026-103403	8.8 HIGH	Session Smart Router and Session Smart Conductor: Unvalidated input causes arbitrary file
CVE-2026-103410	7.5 HIGH	Session Smart Router: Integer overflow causes denial of service during TLS certificate ins
CVE-2026-103411	7.1 HIGH	Session Smart Router: A malicious DHCP server causes information disclosure and a service
CVE-2026-103404	6.8 MEDIUM	Session Smart Conductor: Insecure file permissions cause unauthorized access to sensitive
CVE-2026-103405	5.8 MEDIUM	Session Smart Router and Session Smart Conductor: Unsanitized input causes HTTP response s
CVE-2026-103400	5.5 MEDIUM	Session Smart Router and Session Smart Conductor: Crafted directory names cause arbitrary
CVE-2026-103391	5.3 MEDIUM	Session Smart Router: An attacker-controlled TCP option causes an out-of-bounds write when
CVE-2026-103390	5.3 MEDIUM	Session Smart Router and Session Smart Conductor: A malformed HTTP URI causes a service cr
CVE-2026-103392	4.8 MEDIUM	Session Smart Router: A SACK option causes out-of-bounds memory access and TCP payload cor
CVE-2026-103393	4.3 MEDIUM	Session Smart Router: An attacker can cause an out-of-bounds read during VRRP packet proce
CVE-2026-103394	3.7 LOW	Session Smart Router: An incomplete operator causes the use of incorrect encryption keys d

IV. Related Vulnerabilities

Same product: Session Smart Router

Same vendor: Juniper Networks

Same weakness: CWE-345