#VU107025 Out-of-bounds read in MediaTek products - CVE-2025-20659

Vulnerability identifier: #VU107025

Vulnerability risk: Low

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

CVE-ID: CVE-2025-20659

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
MT2735
Mobile applications / Mobile firmware & hardware
MT2737
Mobile applications / Mobile firmware & hardware
MT6739
Mobile applications / Mobile firmware & hardware
MT6761
Mobile applications / Mobile firmware & hardware
MT6762
Mobile applications / Mobile firmware & hardware
MT6762D
Mobile applications / Mobile firmware & hardware
MT6762M
Mobile applications / Mobile firmware & hardware
MT6763
Mobile applications / Mobile firmware & hardware
MT6765
Mobile applications / Mobile firmware & hardware
MT6765T
Mobile applications / Mobile firmware & hardware
MT6767
Mobile applications / Mobile firmware & hardware
MT6768
Mobile applications / Mobile firmware & hardware
MT6769
Mobile applications / Mobile firmware & hardware
MT6769K
Mobile applications / Mobile firmware & hardware
MT6769S
Mobile applications / Mobile firmware & hardware
MT6769T
Mobile applications / Mobile firmware & hardware
MT6769Z
Mobile applications / Mobile firmware & hardware
MT6771
Mobile applications / Mobile firmware & hardware
MT6783
Mobile applications / Mobile firmware & hardware
MT6785T
Mobile applications / Mobile firmware & hardware
MT6785U
Mobile applications / Mobile firmware & hardware
MT6789
Mobile applications / Mobile firmware & hardware
MT6813
Mobile applications / Mobile firmware & hardware
MT6833
Mobile applications / Mobile firmware & hardware
MT6833P
Mobile applications / Mobile firmware & hardware
MT6835
Mobile applications / Mobile firmware & hardware
MT6835T
Mobile applications / Mobile firmware & hardware
MT6855
Mobile applications / Mobile firmware & hardware
MT6855T
Mobile applications / Mobile firmware & hardware
MT6875T
Mobile applications / Mobile firmware & hardware
MT6877T
Mobile applications / Mobile firmware & hardware
MT6877TT
Mobile applications / Mobile firmware & hardware
MT6878
Mobile applications / Mobile firmware & hardware
MT6878M
Mobile applications / Mobile firmware & hardware
MT6879
Mobile applications / Mobile firmware & hardware
MT6880
Mobile applications / Mobile firmware & hardware
MT6886
Mobile applications / Mobile firmware & hardware
MT6890
Mobile applications / Mobile firmware & hardware
MT6895
Mobile applications / Mobile firmware & hardware
MT6895TT
Mobile applications / Mobile firmware & hardware
MT6896
Mobile applications / Mobile firmware & hardware
MT6897
Mobile applications / Mobile firmware & hardware
MT6899
Mobile applications / Mobile firmware & hardware
MT6980
Mobile applications / Mobile firmware & hardware
MT6980D
Mobile applications / Mobile firmware & hardware
MT6983
Mobile applications / Mobile firmware & hardware
MT6983T
Mobile applications / Mobile firmware & hardware
MT6985
Mobile applications / Mobile firmware & hardware
MT6985T
Mobile applications / Mobile firmware & hardware
MT6989
Mobile applications / Mobile firmware & hardware
MT6989T
Mobile applications / Mobile firmware & hardware
MT6990
Mobile applications / Mobile firmware & hardware
MT6991
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
MT8676
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
MT8781
Mobile applications / Mobile firmware & hardware
MT8786
Mobile applications / Mobile firmware & hardware
MT8788
Mobile applications / Mobile firmware & hardware
MT8788E
Mobile applications / Mobile firmware & hardware
MT8791T
Mobile applications / Mobile firmware & hardware
MT8796
Mobile applications / Mobile firmware & hardware
MT8798
Mobile applications / Mobile firmware & hardware
MT8863
Mobile applications / Mobile firmware & hardware
MT6779
Hardware solutions / Firmware
MT6781
Hardware solutions / Firmware
MT6785
Hardware solutions / Firmware
MT6853
Hardware solutions / Firmware
MT6853T
Hardware solutions / Firmware
MT6873
Hardware solutions / Firmware
MT6875
Hardware solutions / Firmware
MT6877
Hardware solutions / Firmware
MT6883
Hardware solutions / Firmware
MT6885
Hardware solutions / Firmware
MT6889
Hardware solutions / Firmware
MT6891
Hardware solutions / Firmware
MT6893
Hardware solutions / Firmware
MT8797
Hardware solutions / Firmware

Vendor: MediaTek

Description

The vulnerability allows a local application to perform service disruption.

The vulnerability exists due to improper input validation within Modem. A local application can perform service disruption.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

MT2735: All versions

MT2737: All versions

MT6739: All versions

MT6761: All versions

MT6762: All versions

MT6762D: All versions

MT6762M: All versions

MT6763: All versions

MT6765: All versions

MT6765T: All versions

MT6767: All versions

MT6768: All versions

MT6769: All versions

MT6769K: All versions

MT6769S: All versions

MT6769T: All versions

MT6769Z: All versions

MT6771: All versions

MT6779: All versions

MT6781: All versions

MT6783: All versions

MT6785: All versions

MT6785T: All versions

MT6785U: All versions

MT6789: All versions

MT6813: All versions

MT6833: All versions

MT6833P: All versions

MT6835: All versions

MT6835T: All versions

MT6853: All versions

MT6853T: All versions

MT6855: All versions

MT6855T: All versions

MT6873: All versions

MT6875: All versions

MT6875T: All versions

MT6877: All versions

MT6877T: All versions

MT6877TT: All versions

MT6878: All versions

MT6878M: All versions

MT6879: All versions

MT6880: All versions

MT6883: All versions

MT6885: All versions

MT6886: All versions

MT6889: All versions

MT6890: All versions

MT6891: All versions

MT6893: All versions

MT6895: All versions

MT6895TT: All versions

MT6896: All versions

MT6897: All versions

MT6899: All versions

MT6980: All versions

MT6980D: All versions

MT6983: All versions

MT6983T: All versions

MT6985: All versions

MT6985T: All versions

MT6989: All versions

MT6989T: All versions

MT6990: All versions

MT6991: All versions

MT8666: All versions

MT8667: All versions

MT8673: All versions

MT8675: All versions

MT8676: All versions

MT8678: All versions

MT8765: All versions

MT8766: All versions

MT8768: All versions

MT8771: All versions

MT8781: All versions

MT8786: All versions

MT8788: All versions

MT8788E: All versions

MT8791T: All versions

MT8796: All versions

MT8797: All versions

MT8798: All versions

MT8863: All versions

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