Description
An attacker with access to the system's internal network can cause a denial of service on the system by making two concurrent connections through the Telnet service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| EFACEC | QC 60/90/120 | 8 | — |
Critical · 9.2
CVE-2026-22542
EUVD-2026-1211GHSA-gqqp-9725-vwp7
DENIAL OF SERVICE FOR CONCURRENT CONNECTIONS ON TELNET
Published Jan 7, 2026 · Updated Jan 7, 2026 · Assigned by S21sec