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CVE-2026-101038— FAST FAC1200R MmtAtePrase stack-based overflow

Quick assessment

Affected
FAST FAC1200R
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.

FAST FAC1200R 5.0_20201119_1.0.2 中存在一处漏洞。受影响的组件为 MmtAtePrase Parser 中的 MmtAtePrase 函数，该漏洞可导致栈缓冲区溢出。攻击者可远程利用此漏洞。目前该漏洞的利用代码已被公开，可能被恶意利用。供应商在漏洞披露前早期已收到通知，但至今未作出任何回应。

CVSS 9.9 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-101038

Vulnerability Information
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Vulnerability Title
FAST FAC1200R MmtAtePrase stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in FAST FAC1200R 5.0_20201119_1.0.2. Affected by this vulnerability is the function MmtAtePrase of the component MmtAtePrase Parser. This manipulation causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. 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:L/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 FAC1200R 5.0_20201119_1.0.2 cpe:2.3:a:fast:fac1200r:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-101038

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III. Intelligence Information for CVE-2026-101038

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Other References for CVE-2026-101038 (4)

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

CVE-2026-101039 10.0 CRITICAL FAST FAC1900R devdiscover Service copy_msg_element stack-based overflow
CVE-2026-101037 9.9 CRITICAL FAST FAC1200R devdiscover Service parse_advertisement_frame stack-based overflow

IV. Related Vulnerabilities

Same product: FAC1200R
Same vendor: FAST
Same weakness: CWE-121

V. Comments for CVE-2026-101038

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