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CVE-2026-101039— FAST FAC1900R devdiscover Service copy_msg_element stack-based overflow

Quick assessment

Affected
FAST FAC1900R
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.

发现 FAST FAC1900R 20190827_2.0.2 版本中存在一个漏洞。受此问题影响的是 devdiscover 服务组件中的 copy_msg_element 函数。此类操纵可导致基于栈的缓冲区溢出。该漏洞可被远程利用，且相关利用代码已公开，可能存在被实际使用的风险。厂商在披露早期已收到通知，但并未作出任何回应。

CVSS 10.0 · Critical
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I. Basic Information for CVE-2026-101039

Vulnerability Information
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Vulnerability Title
FAST FAC1900R devdiscover Service copy_msg_element stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in FAST FAC1900R 20190827_2.0.2. Affected by this issue is the function copy_msg_element of the component devdiscover Service. Such manipulation leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FAST FAC1900R 20190827_2.0.2 cpe:2.3:a:fast:fac1900r:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-101039

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III. Intelligence Information for CVE-2026-101039

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Other References for CVE-2026-101039 (4)

Same Patch Batch · FAST · 2026-09-28 · 3 CVEs total

CVE-2026-101037 9.9 CRITICAL FAST FAC1200R devdiscover Service parse_advertisement_frame stack-based overflow
CVE-2026-101038 9.9 CRITICAL FAST FAC1200R MmtAtePrase stack-based overflow

IV. Related Vulnerabilities

Same product: FAC1900R
Same vendor: FAST
Same weakness: CWE-121

V. Comments for CVE-2026-101039

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