CVE-2026-63587

SMS Password Authorization Bypass via Failed Attempt Counter

HIGH
8.6
CVSS Score
Published: August 25, 2026 at 08:55 AM UTC
Updated: September 3, 2026 at 05:14 PM UTC
2 products affected across 1 vendorIE-SR-2TX-WL-4G-US-VIE-SR-2TX-WL-4G-EU

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Severity
HIGH8.6
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.67 ≤ v < 1.741.67
Affected range stops below 1.74, so it looks safe — our inference, not a vendor statement
1.67 ≤ v < 1.741.67
Affected range stops below 1.74, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHCERTVDE
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-288

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