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CVE-2026-126759— H3C ICG2000 Unified Communication Gateway Web Management check.j missing authentication

Quick assessment

Affected
H3C ICG2000 Unified Communication Gateway
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.

H3C ICG2000 统一通信网关 2023 版本中发现一处漏洞。该问题影响 Web 管理模块中 文件的某些未知处理逻辑。攻击者可通过执行特定操作绕过身份验证。此攻击可从远程发起。相关利用代码已公开并可能被使用。研究人员称厂商已确认收到漏洞报告，但此后未收到任何进一步回复。

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-126759

Vulnerability Information
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Vulnerability Title
H3C ICG2000 Unified Communication Gateway Web Management check.j missing authentication
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in H3C ICG2000 Unified Communication Gateway 2023. This issue affects some unknown processing of the file /wnm/check.j of the component Web Management Module. Executing a manipulation can lead to missing authentication. The attack may be performed from remote. The exploit has been published and may be used. The researcher claims that the vendor has acknowledged receipt of the vulnerability report. No further response has been received.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
H3C ICG2000 Unified Communication Gateway 2023 cpe:2.3:h:h3c:icg2000_unified_communication_gateway:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-126759

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III. Intelligence Information for CVE-2026-126759

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Vendor Advisories for CVE-2026-126759 (1)

Other References for CVE-2026-126759 (3)

IV. Related Vulnerabilities

Same vendor: H3C
Same weakness: CWE-306