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CVE-2026-109813— Shared Hard-coded Root CA Private Key

Quick assessment

Affected
Moxa AIG-302 Series
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.

在 Moxa 某些工业计算产品的 中，存在一个硬编码加密密钥漏洞。具有相邻网络访问权限的未经身份验证的攻击者，可以利用暴露的私钥材料，破坏通信的保密性和完整性。

CVSS 8.6 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
Moxa AIG-302 Series 1.0.0≤ 1.4.0 affected
1.4.1 unaffected
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I. Basic Information for CVE-2026-109813

Vulnerability Information
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Vulnerability Title
Shared Hard-coded Root CA Private Key
Source: CVE Program / CVE List V5
Vulnerability Description
A hard-coded cryptographic key vulnerability exists in the `/usr/bin/sysman` of some of Moxa's industrial computing products. An unauthenticated attacker with adjacent network access could exploit the exposed private key material to compromise the confidentiality and integrity of communications.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Moxa AIG-302 Series 1.0.0 ~ 1.4.0 -

II. Public POCs for CVE-2026-109813

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-109813

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Vendor Advisories for CVE-2026-109813 (1)

IV. Related Vulnerabilities

Same product: AIG-302 Series
Same vendor: Moxa
Same weakness: CWE-321

V. Comments for CVE-2026-109813

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