CVE-2026-71918
Authenticated command injection in DrayTek VigorSwitch webBackupAction leading to root RCE
Is CVE-2026-71918 being exploited?
Not confirmed. CVE-2026-71918 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 3.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-71918?
CVE-2026-71918 is rated High with a CVSS score of 8.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-71918?
Not known from our data. No patch reference has been recorded for CVE-2026-71918, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-71918 affect?
CVE-2026-71918 affects DrayTek VigorSwitch series, VigorSwitch web management interface, Network switch firmware. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-71918?
Apply vendor patch when released; restrict/disable web admin, enforce ACLs/VPN, rotate admin creds
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated remote command execution as root via web management; full device compromise, persistence, and lateral movement.
Patch when possible
- affected< 3.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.10.6
- affected< 2.9.10
- affected< 3.9.10
- affected< 3.10.6
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.10.6
- affected< 2.9.10
- affected< 3.9.10
- affected< 3.10.6
- affected< 3.10.6
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.10.7
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.9.10
- affected< 2.10.7
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.