#VU103573 Debug Messages Revealing Unnecessary Information in MediaTek products - CVE-2025-20643

Vulnerability identifier: #VU103573

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-20643

CWE-ID: CWE-1295

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT6739
Mobile applications / Mobile firmware & hardware
MT6761
Mobile applications / Mobile firmware & hardware
MT6765
Mobile applications / Mobile firmware & hardware
MT6768
Mobile applications / Mobile firmware & hardware
MT6771
Mobile applications / Mobile firmware & hardware
MT6833
Mobile applications / Mobile firmware & hardware
MT8167
Mobile applications / Mobile firmware & hardware
MT8167S
Mobile applications / Mobile firmware & hardware
MT8175
Mobile applications / Mobile firmware & hardware
MT8185
Mobile applications / Mobile firmware & hardware
MT8195
Mobile applications / Mobile firmware & hardware
MT8321
Mobile applications / Mobile firmware & hardware
MT8362A
Mobile applications / Mobile firmware & hardware
MT8365
Mobile applications / Mobile firmware & hardware
MT8385
Mobile applications / Mobile firmware & hardware
MT8395
Mobile applications / Mobile firmware & hardware
MT8666
Mobile applications / Mobile firmware & hardware
MT8667
Mobile applications / Mobile firmware & hardware
MT8673
Mobile applications / Mobile firmware & hardware
MT8675
Mobile applications / Mobile firmware & hardware
MT8678
Mobile applications / Mobile firmware & hardware
MT8765
Mobile applications / Mobile firmware & hardware
MT8766
Mobile applications / Mobile firmware & hardware
MT8768
Mobile applications / Mobile firmware & hardware
MT8771
Mobile applications / Mobile firmware & hardware
MT8775
Mobile applications / Mobile firmware & hardware
MT8781
Mobile applications / Mobile firmware & hardware
MT8786
Mobile applications / Mobile firmware & hardware
MT8788
Mobile applications / Mobile firmware & hardware
MT8789
Mobile applications / Mobile firmware & hardware
MT8791T
Mobile applications / Mobile firmware & hardware
MT8795T
Mobile applications / Mobile firmware & hardware
MT8798
Mobile applications / Mobile firmware & hardware
MT8893
Mobile applications / Mobile firmware & hardware
MT6779
Hardware solutions / Firmware
MT6781
Hardware solutions / Firmware
MT6785
Hardware solutions / Firmware
MT6853
Hardware solutions / Firmware
MT6873
Hardware solutions / Firmware
MT6877
Hardware solutions / Firmware
MT6885
Hardware solutions / Firmware
MT6893
Hardware solutions / Firmware
MT8797
Hardware solutions / Firmware

Vendor: MediaTek

Description

The vulnerability allows a local application to gain access to sensitive information.

The vulnerability exists due to a missing bounds check within Flash Tool V5 old-arch Lib. A local application can gain access to sensitive information.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

MT6739: All versions

MT6761: All versions

MT6765: All versions

MT6768: All versions

MT6771: All versions

MT6779: All versions

MT6781: All versions

MT6785: All versions

MT6833: All versions

MT6853: All versions

MT6873: All versions

MT6877: All versions

MT6885: All versions

MT6893: All versions

MT8167: All versions

MT8167S: All versions

MT8175: All versions

MT8185: All versions

MT8195: All versions

MT8321: All versions

MT8362A: All versions

MT8365: All versions

MT8385: All versions

MT8395: All versions

MT8666: All versions

MT8667: All versions

MT8673: All versions

MT8675: All versions

MT8678: All versions

MT8765: All versions

MT8766: All versions

MT8768: All versions

MT8771: All versions

MT8775: All versions

MT8781: All versions

MT8786: All versions

MT8788: All versions

MT8789: All versions

MT8791T: All versions

MT8795T: All versions

MT8797: All versions

MT8798: All versions

MT8893: 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?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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