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CVE-2026-11754— User Enumeration in Seres Software's syWEB

Quick assessment

Affected
Seres Software syWEB
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.

Seres Software syWEB是土耳其Seres Software公司的一款嵌入式Web服务器中间件。 Seres Software syWEB 27082026及之前版本存在侧信道信息泄露漏洞，该漏洞源于存在可观察到的差异，可能导致账户信息泄露。

CVSS 5.3 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 3 AI

T1042 T1006 · Direct Volume Access T1015

Affected Version Matrix 1

VendorProduct Version RangeStatus
Seres Software syWEB ≤ 27082026 affected
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I. Basic Information for CVE-2026-11754

Vulnerability Information
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Vulnerability Title
User Enumeration in Seres Software's syWEB
Source: CVE Program / CVE List V5
Vulnerability Description
Observable discrepancy vulnerability in Seres Software syWEB allows Account Footprinting. This issue affects syWEB: through 27082026. NOTE: The vendor was contacted and it was learned that the product is not supported.
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
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Seres Software syWEB 侧信道信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Seres Software syWEB是土耳其Seres Software公司的一款嵌入式Web服务器中间件。 Seres Software syWEB 27082026及之前版本存在侧信道信息泄露漏洞，该漏洞源于存在可观察到的差异，可能导致账户信息泄露。
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

Vendor Product Affected Versions CPE Subscribe
Seres Software syWEB 0 ~ 27082026 -

II. Public POCs for CVE-2026-11754

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III. Intelligence Information for CVE-2026-11754

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Vendor Advisories for CVE-2026-11754 (1)

IV. Related Vulnerabilities

Same product: syWEB
Same vendor: Seres Software
Same weakness: CWE-203

V. Comments for CVE-2026-11754

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