#VU103559 Out-of-bounds write in MediaTek products - CVE-2025-20633

Vulnerability identifier: #VU103559

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-20633

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MT7603
Mobile applications / Mobile firmware & hardware
MT7615
Mobile applications / Mobile firmware & hardware
MT7622
Mobile applications / Mobile firmware & hardware
MT7915
Mobile applications / Mobile firmware & hardware

Vendor: MediaTek

Description

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to an incorrect bounds check within wlan. A remote attacker can trick the victim to open a specially crafted file and execute arbitrary code.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

MT7603: All versions

MT7615: All versions

MT7622: All versions

MT7915: All versions

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External links
https://corp.mediatek.com/product-security-bulletin/February-2025

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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 Internet.

Is there known malware, which exploits this vulnerability?

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