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CVE-2026-19748— Tenda CH7 Kylin Web Service CWebSessionManager_ParseSession entropy

Quick assessment

Affected
Tenda CH7
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.

Tenda CH7是中国Tenda公司的一款路由器。 Tenda CH7、Tenda CH7G、Tenda CH10、Tenda CP3、Tenda CP3 Pro、Tenda CP7、Tenda TC3B14C、Tenda TC3B15C、Tenda TC3T14C和Tenda TC3T15C 20260625及之前版本存在加密问题漏洞，该漏洞源于Kylin Web Service组件中/user/bin/Kylin文件的CWebSessionManager_ParseSession函数对SESSION

CVSS 3.7 · Low EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Tenda CH10 20260625 affected
Tenda CH7 20260625 affected
Tenda CH7G 20260625 affected
Tenda CP3 20260625 affected
Tenda CP3 Pro 20260625 affected
Tenda CP7 20260625 affected
Tenda TC3B14C 20260625 affected
Tenda TC3B15C 20260625 affected
Tenda TC3T14C 20260625 affected
Tenda TC3T15C 20260625 affected
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I. Basic Information for CVE-2026-19748

Vulnerability Information
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Vulnerability Title
Tenda CH7 Kylin Web Service CWebSessionManager_ParseSession entropy
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in Tenda CH7, CH7G, CH10, CP3, CP3 Pro, CP7, TC3B14C, TC3B15C, TC3T14C and TC3T15C up to 20260625. Affected is the function CWebSessionManager_ParseSession of the file /user/bin/Kylin of the component Kylin Web Service. Such manipulation of the argument SESSION leads to insufficient entropy. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is told to be difficult.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息熵不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda CH7 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda CH7是中国Tenda公司的一款路由器。 Tenda CH7、Tenda CH7G、Tenda CH10、Tenda CP3、Tenda CP3 Pro、Tenda CP7、Tenda TC3B14C、Tenda TC3B15C、Tenda TC3T14C和Tenda TC3T15C 20260625及之前版本存在加密问题漏洞，该漏洞源于Kylin Web Service组件中/user/bin/Kylin文件的CWebSessionManager_ParseSession函数对SESSION
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
Tenda CH7 20260625 cpe:2.3:h:tenda:ch7:*:*:*:*:*:*:*:*
Tenda CH7G 20260625 cpe:2.3:h:tenda:ch7g:*:*:*:*:*:*:*:*
Tenda CH10 20260625 cpe:2.3:h:tenda:ch10:*:*:*:*:*:*:*:*
Tenda CP3 20260625 cpe:2.3:h:tenda:cp3:*:*:*:*:*:*:*:*
Tenda CP3 Pro 20260625 cpe:2.3:h:tenda:cp3_pro:*:*:*:*:*:*:*:*
Tenda CP7 20260625 cpe:2.3:h:tenda:cp7:*:*:*:*:*:*:*:*
Tenda TC3B14C 20260625 cpe:2.3:h:tenda:tc3b14c:*:*:*:*:*:*:*:*
Tenda TC3B15C 20260625 cpe:2.3:h:tenda:tc3b15c:*:*:*:*:*:*:*:*
Tenda TC3T14C 20260625 cpe:2.3:h:tenda:tc3t14c:*:*:*:*:*:*:*:*
Tenda TC3T15C 20260625 cpe:2.3:h:tenda:tc3t15c:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19748

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III. Intelligence Information for CVE-2026-19748

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Proof of Concept for CVE-2026-19748 (1)

Security Blog Posts for CVE-2026-19748 (1)

Other References for CVE-2026-19748 (2)

Same Patch Batch · Tenda · 2026-08-13 · 4 CVEs total

CVE-2026-19747 9.8 CRITICAL Tenda CH7 ATE Module Kylin HandleCmd command injection
CVE-2026-19750 8.1 HIGH Tenda CH/CP/TX3 SSH hard-coded password
CVE-2026-19749 3.7 LOW Tenda CH7 RTSP/ONVIF missing authentication

IV. Related Vulnerabilities

Same product: CH7
Same vendor: Tenda
Same weakness: CWE-331

V. Comments for CVE-2026-19748

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