[NEW] [medium] DrayTek Vigor Switches: Multiple Vulnerabilities Enable Code Execution
A remote, authenticated attacker can exploit multiple vulnerabilities in DrayTek Vigor Switches to execute arbitrary code.
CSIRTS triage
- What
- Multiple vulnerabilities enable remote authenticated attackers to execute arbitrary code.
- Who is affected
- DrayTek Vigor Switch deployments with remote management or API access enabled.
- Urgency
- Medium severity requiring authentication; patch promptly to prevent code execution on network infrastructure.
- Action
- Update DrayTek Vigor Switches to firmware versions addressing CVE-2026-71915 through CVE-2026-71922.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2991
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Moderate exploitation riskCVE-2026-719153.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 87% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-719162.4% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 83% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-719173.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 87% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-719183.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 87% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-719193.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 87% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-719200.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 32% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-719213.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 87% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-719220.47% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-719231.7% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 75% of all EPSS-scored CVEs.
- Moderate exploitation riskCVE-2026-719243.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 87% of all EPSS-scored CVEs.
Referenced CVEs
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- highCVE-2026-71943: Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the setDevNet…nvd
- highCVE-2026-71942: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the mail_mailal…nvd
- highCVE-2026-71941: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the diag_logmai…nvd
- highCVE-2026-71940: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the acl_general…nvd
- highCVE-2026-71939: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the acl_general…nvd
- highCVE-2026-71938: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the switch_lan_…nvd
- highCVE-2026-71937: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the poe_schedul…nvd
- highCVE-2026-71936: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the sysreboot f…nvd
- highCVE-2026-71935: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the webBackupAc…nvd
- highCVE-2026-71934: Multiple DrayTek VigorSwitch models contain a buffer overflow vulnerability in the pingtrace f…nvd
- criticalCVE-2026-71933: Multiple DrayTek VigorSwitch models contain unauthorized operation vulnerabilities in multiple…nvd
- mediumCVE-2026-71932: Multiple DrayTek VigorSwitch models contain a directory traversal vulnerability in the getSysl…nvd
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