CVE-2026-71933
8.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
Multiple DrayTek VigorSwitch models contain unauthorized operation vulnerabilities in multiple syslog functions. The vulnerability is caused by missing authorization checks. A remote attacker can trigger these vulnerabilities via crafted requests to modify configuration, restart services, save startup configuration, or clear logs.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| DrayTek Corporation | VigorSwitch G2540xs | 0 < 3.9.10 | affected |
| DrayTek Corporation | VigorSwitch P2540xs | 0 < 3.9.10 | affected |
| DrayTek Corporation | VigorSwitch FX2120 | 0 < 3.9.10 | affected |
| DrayTek Corporation | VigorSwitch G2282x | 0 < 2.10.6 | affected |
| DrayTek Corporation | VigorSwitch P2282x | 0 < 2.10.6 | affected |
| DrayTek Corporation | VigorSwitch Q2300x | 0 < 2.10.7 | affected |
| DrayTek Corporation | VigorSwitch PQ2300xb | 0 < 2.10.7 | affected |
| DrayTek Corporation | VigorSwitch G2542x | 0 < 3.10.6 | affected |
| DrayTek Corporation | VigorSwitch P2542x | 0 < 3.10.6 | affected |
| DrayTek Corporation | VigorSwitch P2542xh | 0 < 3.10.6 | affected |
| DrayTek Corporation | VigorSwitch PX2060 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch G1280 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch P1280 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch P1281x | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch G1282 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch P1282 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch G2121 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch P2121 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch PQ2121x | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch Q2121x | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch G2280x | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch P2280x | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch Q2200x | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch PQ2200xb | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch G2100 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch P2100 | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch G2540x | 0 < 2.9.10 | affected |
| DrayTek Corporation | VigorSwitch P2540x | 0 < 2.9.10 | affected |
Weaknesses
- CWE-862: Missing Authorization
References
- https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/
- https://www.vulncheck.com/advisories/draytek-vigorswitch-multiple-models-missing-authorization-in-syslog-functions
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