CVE-2021-47740
MEDIUM EPSS 29.6%
Published Dec 31, 20256mo ago · Modified Jun 17, 20262w ago
6.9 CVSS 4.0
Published Dec 31, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
29.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-613
References 7
- kzbtech.com http://www.kzbtech.com/
- exchange.xforce.ibmcloud.com https://exchange.xforce.ibmcloud.com/vulnerabilities/198471
- neotel.mk https://neotel.mk/
- packetstormsecurity.com https://packetstormsecurity.com/files/161892/
- jatontech.com https://www.jatontech.com/
- vulncheck.com https://www.vulncheck.com/advisories/kztech-jtv-g-lte-cpe-insufficient-session-expiration-vulnerability
- zeroscience.mk https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5646.php
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.