# CVE-2026-121260: Ziroom ZHOME A0101 Lua zrUsb.lua loadstring code injection

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

A flaw has been found in Ziroom ZHOME A0101 1.0.1.0 Build 202004151405. This issue affects the function loadstring of the file usr/lib/lua/luci/controller/api/zrUsb.lua of the component Lua Handler. This manipulation causes code injection. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Ziroom / ZHOME A0101: 1.0.1.0 Build 202004151405 (affected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 9.4 (critical); CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P; source: CNA: VulDB

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R; source: CNA: VulDB

- CVSS 3.0: 9.1 (critical); CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R; source: CNA: VulDB

- CVSS 2.0: 8.3 (high); AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR; source: CNA: VulDB

- CVSS 4.0: 8.5 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/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: cna@vuldb.com

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H; source: NVD: cna@vuldb.com

- CVSS 2.0: 8.3 (high); AV:N/AC:L/Au:M/C:C/I:C/A:C; source: NVD: cna@vuldb.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation poc; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-94, CWE-74

## Exploit evidence

- exploit: https://github.com/Wlz1112/ZHOME_A0101/blob/main/zrusb_loadstring_code_injection.md (CNA: VulDB)
- exploit: https://github.com/Wlz1112/ZHOME_A0101/blob/main/zrusb_loadstring_code_injection.md (ADP: CISA-ADP)

## References

- https://vuldb.com/vuln/430226 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/430226/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-121260 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1018328 (CNA: VulDB; third-party-advisory)

- https://github.com/Wlz1112/ZHOME_A0101/blob/main/zrusb_loadstring_code_injection.md (CNA: VulDB; exploit)

- https://github.com/Wlz1112/ZHOME_A0101/blob/main/zrusb_loadstring_code_injection.md (ADP: CISA-ADP; exploit)

- https://github.com/Wlz1112/ZHOME_A0101/blob/main/zrusb_loadstring_code_injection.md (cna@vuldb.com)

- https://vuldb.com/cve/CVE-2026-121260 (cna@vuldb.com)

- https://vuldb.com/submit/1018328 (cna@vuldb.com)

- https://vuldb.com/vuln/430226 (cna@vuldb.com)

- https://vuldb.com/vuln/430226/cti (cna@vuldb.com)

- https://github.com/Wlz1112/ZHOME_A0101/blob/main/zrusb_loadstring_code_injection.md (134c704f-9b21-4f2e-91b3-4a467353bcc0)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-121260; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-121260; retrieved 2026-11-03; source updated 2026-11-03

Revision: b5dabd6f7199a56f2446687ad54206a689247861a31f95f1a0a825612d849bf9

Canonical: https://y2.dev/cve/CVE-2026-121260

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