CVE-2026-63587

SMS Password Authorization Bypass via Failed Attempt Counter

Published Aug 25, 2026 CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title SMS Password Authorization Bypass via Failed Attempt Counter
First Time appeared Weidmueller
Weidmueller fwr Ie Sr 2tx Wl 4g Eu Us
Weaknesses CWE-288
CPEs cpe:2.3:o:weidmueller:fwr_ie_sr_2tx_wl_4g_eu_us:*:*:*:*:*:*:*:*
Vendors & Products Weidmueller
Weidmueller fwr Ie Sr 2tx Wl 4g Eu Us
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H'}

cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
Aug 27, 2026, 3:04 PM
Reserved
Jul 17, 2026, 6:47 AM
Status
Deferred
Published
Aug 25, 2026, 9:17 AM
Modified
Sep 3, 2026, 4:57 PM