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CVE-2021-47740— KZTech JT3500V 4G LTE CPE 2.0.1 Insufficient Session Expiration Vulnerability

Quick assessment

Affected
KZ Broadband Technologies, Ltd. JT3500V
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.

KZTech JT3500V是美国KZTech公司的一款无线宽带路由器。 KZTech JT3500V存在代码问题漏洞，该漏洞源于会话管理不当，可能导致攻击者重用旧会话凭据。

CVSS 7.5 · High EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2021-47740

Vulnerability Information
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Vulnerability Title
KZTech JT3500V 4G LTE CPE 2.0.1 Insufficient Session Expiration Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
KZTech JT3500V 4G LTE CPE 2.0.1 contains a session management vulnerability that allows attackers to reuse old session credentials without proper expiration. Attackers can exploit the weak session handling to maintain unauthorized access and potentially compromise device authentication mechanisms.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
KZTech JT3500V 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
KZTech JT3500V是美国KZTech公司的一款无线宽带路由器。 KZTech JT3500V存在代码问题漏洞，该漏洞源于会话管理不当，可能导致攻击者重用旧会话凭据。
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
KZ Broadband Technologies, Ltd. JT3500V 2.0.1B1064 -
KZ Broadband Technologies, Ltd. AM6200M 2.0.0B3210 -
KZ Broadband Technologies, Ltd. AM6000N 2.0.0B3042 -
KZ Broadband Technologies, Ltd. AM5000W 2.0.0B3037 -
KZ Broadband Technologies, Ltd. AM4200M 2.0.0B2996 -
KZ Broadband Technologies, Ltd. AM4100V 2.0.0B2988 -
KZ Broadband Technologies, Ltd. AM3500MW 2.0.0B1092 -
KZ Broadband Technologies, Ltd. AM3410V 2.0.0B1085 -
KZ Broadband Technologies, Ltd. AM3300V 2.0.0B1060 -
KZ Broadband Technologies, Ltd. AM3100E 2.0.0B981 -
KZ Broadband Technologies, Ltd. AM3100V 2.0.0B946 -
KZ Broadband Technologies, Ltd. AM3000M 2.0.0B21 -
KZ Broadband Technologies, Ltd. KZ7621U 2.0.0B14 -
KZ Broadband Technologies, Ltd. KZ3220M 2.0.0B04 -
KZ Broadband Technologies, Ltd. KZ3120R 2.0.0B01 -

II. Public POCs for CVE-2021-47740

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III. Intelligence Information for CVE-2021-47740

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Vendor Advisories for CVE-2021-47740 (2)

Exploits & Public PoCs for CVE-2021-47740 (1)

Other References for CVE-2021-47740 (2)

IV. Related Vulnerabilities

Same weakness: CWE-613

V. Comments for CVE-2021-47740

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