CVE-2026-75488
Cudy TR3000 before 2.5.42 Stack Buffer Overflow via CWMP Basic Authorization Builder
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
Cudy TR3000 before 2.5.42 contains a stack buffer overflow vulnerability in the CWMP client that allows a malicious ACS to corrupt stack memory via oversized credentials. Attackers controlling the ACS can send Username and Password values up to 256 bytes in TR-069 Download or Upload requests, overflowing 128-byte stack buffers and crashing the CWMP process.
| CWE | CWE-121 |
| Vendor | shenzhen cudy technology co., ltd. |
| Product | tr3000 1.0 |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Shenzhen Cudy Technology Co., Ltd. / TR3000 1.0
0 < 2.5.42
References
cudy.com: https://www.cudy.com/en-us/pages/download-center/tr3000-1-0 d1jvyy13vm72kv.cloudfront.net: https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip vulncheck.com: https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-stack-buffer-overflow-via-cwmp-basic-authorization-builder