CVE-2026-129104
Cudy TR3000 before 2.5.42 dnsmasq Configuration Injection via net.set_dhcp
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
Cudy TR3000 before 2.5.42 contains a dnsmasq configuration injection vulnerability that allows authenticated administrators to inject directives by embedding a newline in the net.set_dhcp leasetime field. Attackers can append address= entries via /etc/init.d/dnsmasq to alter DNS answers for LAN clients, or insert invalid lines that stop dnsmasq.
| CWE | CWE-93 |
| 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:L/PR:H/UI:N/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
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-dnsmasq-configuration-injection-via-net-set-dhcp