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CVE-2026-3873— Legacy built-in user account

CVSS 7.2 · High EPSS 0.21% · P11

Possible ATT&CK Techniques 1AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-3873

Vulnerability Information
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Vulnerability Title
Legacy built-in user account
Source: CVE Program / CVE List V5
Vulnerability Description
Use of Hard-coded Credentials vulnerability in Avantra allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Avantra: before 25.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5
Vulnerability Title
Avantra 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Avantra是Avantra公司的一个 SAP 软件。 Avantra 25.3.0之前版本存在安全漏洞，该漏洞源于使用硬编码凭证，可能导致访问未受ACL适当约束的功能。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
syslink software AGAvantra 0 ~ 25.3.0 -

II. Public POCs for CVE-2026-3873

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III. Intelligence Information for CVE-2026-3873

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IV. Related Vulnerabilities

Same product: Avantra
Same vendor: syslink software AG
Same weakness: CWE-798

V. Comments for CVE-2026-3873

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