CVE-2025-20693 in MT2737
Summary
by MITRE • 07/08/2025
In wlan STA driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to remote (proximal/adjacent) information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS09812521; Issue ID: MSV-3421.
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Analysis
by VulDB Data Team • 07/08/2025
The vulnerability identified as CVE-2025-20693 resides within the wireless local area network station driver component of a mobile operating system, specifically affecting the wlan STA driver functionality. This issue represents a critical security flaw that manifests through an improper bounds checking mechanism during memory access operations. The vulnerability affects the underlying wireless communication stack that manages connections between mobile devices and wireless access points, creating a potential attack surface that could be exploited by adversaries within proximity of the targeted device.
The technical flaw stems from an incorrect implementation of boundary validation logic within the driver code responsible for processing wireless frames and managing station state information. When the driver processes incoming wireless packets or handles specific station configuration parameters, it fails to properly validate array indices or buffer boundaries before accessing memory locations. This improper bounds checking creates a condition where an attacker can craft malicious wireless frames that trigger an out-of-bounds memory read operation. The vulnerability is classified as a buffer overflow condition under CWE-129, specifically manifesting as an insufficient bounds check that allows memory access beyond allocated boundaries.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables remote attackers to extract sensitive data from the device's memory space without requiring any form of user interaction or additional privileges. The attack vector is particularly concerning because it operates over the wireless medium, allowing adversaries to exploit the vulnerability from adjacent physical locations without needing to establish a connection or perform complex authentication processes. This proximity-based attack model aligns with ATT&CK technique T1046 which describes the use of network service scanning and wireless network exploitation. The lack of user interaction requirements makes this vulnerability particularly dangerous as it can be exploited automatically without victim awareness.
The information disclosure aspect of this vulnerability could potentially expose sensitive system data including wireless credentials, device identifiers, network configuration parameters, or other confidential information stored in memory. Attackers could leverage this flaw to gather intelligence about the target device, its network connections, or the broader wireless environment. The vulnerability affects devices running on the affected operating system version and requires no special privileges to exploit, making it accessible to any attacker within wireless range. This characteristic places the vulnerability in the category of persistent threats that can be exploited repeatedly without user involvement or system modifications.
Mitigation strategies for this vulnerability should focus on immediate patch deployment through the standard update mechanisms provided by the operating system vendor. The patch ID ALPS09812521 represents the specific fix that addresses the bounds checking implementation error in the wlan STA driver. Organizations should prioritize deployment of this patch across all affected devices, particularly those in high-security environments or locations where wireless proximity attacks could pose significant risks. Additional defensive measures include implementing wireless network segmentation, monitoring for unusual wireless traffic patterns, and deploying network intrusion detection systems that can identify potential exploitation attempts. Security teams should also consider implementing device profiling to detect anomalous wireless behavior that could indicate exploitation attempts, while maintaining awareness of the broader wireless security landscape and potential related vulnerabilities in adjacent systems.