Vulnerability · Published Aug 25, 2026 · Assigned by CERTVDE
CVE-2026-63587SMS Password Authorization Bypass via Failed Attempt Counter
High 8.6
In plain English
A high-severity authentication bypass in IE-SR-2TX-WL-4G-EU from Weidmueller Interface. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Official description
The SMS control function of IE-SR-2TX-WL-4G devices can require a password for SMS commands via the 'Enable Password Authorization' setting. The device increments a retry counter on each failed SMS password attempt; after 5 consecutive failed attempts, SMS password authorization is automatically disabled. An unauthenticated remote attacker who is able to send SMS messages to the device can deliberately trigger this by submitting 5 or more invalid passwords, after which subsequent SMS commands are executed without requiring a password, resulting in potential limited configuration tampering, limited information leakage and potentially full loss of availability.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Weidmueller Interface | IE-SR-2TX-WL-4G-EU | 1.67 – before 1.74 |
| Weidmueller Interface | IE-SR-2TX-WL-4G-US-V | 1.67 – before 1.74 |
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H