# CVE-2026-75577: Cudy TR3000 before 2.5.42 Command Injection via vpn.export_conf WireGuard Private Key

Status: published. Published: 2026-11-13. Updated: 2026-11-13.

Cudy TR3000 before 2.5.42 contains a command injection vulnerability that allows authenticated administrators to execute commands as root by storing a malicious WireGuard private key. Attackers can save a private_key containing $() shell substitution and call the vpn.export_conf method on the /cgi-bin/luci/rpc/app JSON-RPC endpoint, which passes the key to a wg pubkey shell command.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip

## Affected products and versions

- Shenzhen Cudy Technology Co., Ltd. / TR3000 1.0: ≥ 0; < 2.5.42 (affected, semver); 2.5.42 (unaffected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.6 (high); 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; source: CNA: VulnCheck

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CVSS 4.0: 8.6 (high); 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/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; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-78

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.cudy.com/en-us/pages/download-center/tr3000-1-0 (CNA: VulnCheck; release-notes)

- https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip (CNA: VulnCheck; patch)

- https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-vpn-export-conf-wireguard-private-key (CNA: VulnCheck; third-party-advisory)

- https://d1jvyy13vm72kv.cloudfront.net/device/upgrade/m_upgrade_TR3000_256MB_Flash-R103-2.5.42-20261103-160202-sysupgrade_82672.zip (disclosure@vulncheck.com)

- https://www.cudy.com/en-us/pages/download-center/tr3000-1-0 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/cudy-tr3000-before-2.5.42-command-injection-via-vpn-export-conf-wireguard-private-key (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-75577; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-75577; retrieved 2026-11-13; source updated 2026-11-13

Revision: ad42d8ee819d1e8dea3627441ef89d10da922c8d766bbf85e1150b0f8d44b223

Canonical: https://y2.dev/cve/CVE-2026-75577

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