#VU103884 Buffer overflow in qtconnectivity - CVE-2025-23050

Vulnerability identifier: #VU103884

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-23050

CWE-ID: CWE-119

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
qtconnectivity
Universal components / Libraries / Libraries used by multiple products

Vendor: Qt Group

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error reading data from the Bluetooth L2CAP socket within the processUnsolicitedReply() and processReply() function in bluetooth/qlowenergycontroller_bluez.cpp. A remote attacker can send specially crafted packets to the system, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

qtconnectivity: 5.4.0 - 5.4.2, 5.5.0 - 5.5.1, 5.6.0 - 5.6.3, 5.7.0 - 5.7.1, 5.8.0, 5.9.0 - 5.9.9, 5.10.0 - 5.10.1, 5.11.0 - 5.11.3, 5.12.0 - 5.12.12, 5.13.0 - 5.13.2, 5.14.0 - 5.14.2, 5.15.0 - 5.15.2, 6.2.0 - 6.2.4, 6.3.0 - 6.3.2, 6.4.0 - 6.4.3, 6.5.0 - 6.5.3, 6.6.0 - 6.6.3, 6.7.0 - 6.7.3, 6.8.0 - 6.8.1

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External links
https://github.com/qt/qtconnectivity/commit/465e3f3112a9c158aa6dd2f8b9439ae6c2de336f

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.