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CVE-2026-90647

Quick assessment

Affected
Kalkitech ASE2000 V2 Communication Test Set
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.

安装于 Windows 平台、版本为 2.35 至 2.37 的 ASE/Kalkitech ASE2000 V2 通信测试仪，在其 IEC 60870-5-104 协议的任务模式（Task Mode）TLS 客户端中存在证书验证不当的漏洞。 由于该漏洞，处于网络中间位置的攻击者可以通过使用一个存在多重并发缺陷的证书，绕过系统的证书验证机制，从而对受保护的通信链路发起中间人（MitM）攻击。

CVSS 7.4 · High
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I. Basic Information for CVE-2026-90647

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
ASE/Kalkitech ASE2000 V2 Communication Test Set 2.35 through 2.37 on Windows contains an improper certificate validation vulnerability in the IEC 60870-5-104 TLS client (Task Mode). This allows a network-positioned attacker to bypass certificate validation via a certificate with multiple simultaneous faults, enabling a Man-in-the-Middle attack on protected communications.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Kalkitech ASE2000 V2 Communication Test Set 2.35 ~ 2.38 -

II. Public POCs for CVE-2026-90647

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III. Intelligence Information for CVE-2026-90647

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Vendor Advisories for CVE-2026-90647 (1)

IV. Related Vulnerabilities

Same weakness: CWE-295

V. Comments for CVE-2026-90647

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