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CVE-2026-80156— Lantronix Autonomous Out-of-Band Devices Arbitrary File Write via Upload Filename Validation Bypass

一分钟漏洞结论

影响对象
LANTRONIX SLC8000
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Lantronix SLC8000 before firmware v9.7.0.5, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a path traversal vulnerability in the web management portal upload endpoint that allows authenticated attackers to

CVSS 9.1 · Critical
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一、 漏洞 CVE-2026-80156 基础信息

漏洞信息

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Vulnerability Title
Lantronix Autonomous Out-of-Band Devices Arbitrary File Write via Upload Filename Validation Bypass
来源: CVE Program / CVE List V5
Vulnerability Description
Lantronix SLC8000 before firmware v9.7.0.5, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a path traversal vulnerability in the web management portal upload endpoint that allows authenticated attackers to write arbitrary data to any location on the device's filesystem, leading to remote code execution. The upload filename validation strips backslash characters but does not subsequently check for forward slashes when a backslash is detected; by supplying a filename containing both characters an attacker writes outside the intended upload directory to any writable path. Attackers can use this vulnerability to achieve complete loss of confidentiality, integrity, and availability on the affected device and potentially impact downstream serial-connected devices.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
LANTRONIX SLC8000 0 ~ 9.7.0.5 -
LANTRONIX EMG8500 0 ~ 9.7.0.1 -
LANTRONIX EMG7500 0 ~ 9.7.0.1 -
LANTRONIX SLB882 * -
LANTRONIX SLCx-03 * -
LANTRONIX SLCx-02 * -

二、漏洞 CVE-2026-80156 的公开POC

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三、漏洞 CVE-2026-80156 的情报信息

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CVE-2026-80156 其他参考 (5)

同批安全公告 · LANTRONIX · 2026-09-22 · 共 13 条

CVE-2026-80155 10.0 CRITICAL Lantronix Autonomous Out-of-Band Devices Unauthenticated Authentication Bypass via snprint
CVE-2026-80144 9.9 CRITICAL Lantronix Autonomous Out-of-Band Devices CLI Command Injection via mfc eeprom write
CVE-2026-80147 9.9 CRITICAL Lantronix Autonomous Out-of-Band Devices Stack-Based Buffer Overflow via mfc eeprom write
CVE-2026-80146 9.9 CRITICAL Lantronix Autonomous Out-of-Band Devices Stack-Based Buffer Overflow via mfc eeprom read
CVE-2026-80143 9.9 CRITICAL Lantronix Autonomous Out-of-Band Devices CLI Command Injection via mfc eeprom read
CVE-2026-80154 9.6 CRITICAL Lantronix Autonomous Out-of-Band Devices Predictable Session Token with Validation Bypass
CVE-2026-80145 9.1 CRITICAL Lantronix Autonomous Out-of-Band Devices CLI Command Injection via set cifs password
CVE-2026-80151 9.1 CRITICAL Lantronix Autonomous Out-of-Band Devices OS Command Injection via set nfs download
CVE-2026-80152 9.1 CRITICAL Lantronix Autonomous Out-of-Band Devices OS Command Injection via set script schedule
CVE-2026-80148 8.6 HIGH Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via Username Truncation
CVE-2026-80149 8.6 HIGH Lantronix Autonomous Out-of-Band Devices WebSSH SSRF via rooturl Parameter
CVE-2026-80150 7.5 HIGH Lantronix Autonomous Out-of-Band Devices WebTelnet SSRF via rooturl Parameter

IV. Related Vulnerabilities

Same product: SLC8000
Same vendor: LANTRONIX
Same weakness: CWE-22

V. Comments for CVE-2026-80156

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